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milvus/internal/querycoord/task.go
SimFG d7f38a803d
Separate some proto files (#19218) 
Signed-off-by: SimFG <bang.fu@zilliz.com>

Signed-off-by: SimFG <bang.fu@zilliz.com>
2022-09-16 16:56:49 +08:00

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// Licensed to the LF AI & Data foundation under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package querycoord
import (
"context"
"errors"
"fmt"
"sort"
"sync"
"sync/atomic"
"time"
"github.com/golang/protobuf/proto"
"go.uber.org/zap"
"golang.org/x/sync/errgroup"
"github.com/milvus-io/milvus/api/commonpb"
"github.com/milvus-io/milvus/api/milvuspb"
"github.com/milvus-io/milvus/internal/log"
"github.com/milvus-io/milvus/internal/metrics"
"github.com/milvus-io/milvus/internal/proto/datapb"
"github.com/milvus-io/milvus/internal/proto/querypb"
"github.com/milvus-io/milvus/internal/util/funcutil"
"github.com/milvus-io/milvus/internal/util/timerecord"
"github.com/milvus-io/milvus/internal/util/typeutil"
)
var (
ErrCollectionLoaded = errors.New("CollectionLoaded")
ErrLoadParametersMismatch = errors.New("LoadParametersMismatch")
)
type taskState int
const (
taskUndo taskState = 0
taskDoing taskState = 1
taskDone taskState = 3
taskExpired taskState = 4
taskFailed taskState = 5
)
type task interface {
traceCtx() context.Context
getTaskID() UniqueID // return ReqId
setTaskID(id UniqueID)
msgBase() *commonpb.MsgBase
msgType() commonpb.MsgType
timestamp() Timestamp
getTriggerCondition() querypb.TriggerCondition
setTriggerCondition(trigger querypb.TriggerCondition)
preExecute(ctx context.Context) error
execute(ctx context.Context) error
postExecute(ctx context.Context) error
globalPostExecute(ctx context.Context) error // execute after all child task completed
reschedule(ctx context.Context) ([]task, error)
rollBack(ctx context.Context) []task
waitToFinish() error
notify(err error)
taskPriority() querypb.TriggerCondition
setParentTask(t task)
getParentTask() task
getChildTask() []task
addChildTask(t task)
removeChildTaskByID(taskID UniqueID)
isValid() bool
marshal() ([]byte, error)
getState() taskState
setState(state taskState)
isRetryable() bool
setResultInfo(err error)
getResultInfo() *commonpb.Status
updateTaskProcess()
elapseSpan() time.Duration
finishContext()
}
type baseTask struct {
condition
ctx context.Context
cancel context.CancelFunc
result *commonpb.Status
resultMu sync.RWMutex
state taskState
stateMu sync.RWMutex
retryCount int32
taskID UniqueID
triggerCondition querypb.TriggerCondition
triggerMu sync.RWMutex
parentTask task
childTasks []task
childTasksMu sync.RWMutex
timeRecorder *timerecord.TimeRecorder
}
func newBaseTask(ctx context.Context, triggerType querypb.TriggerCondition) *baseTask {
childCtx, cancel := context.WithCancel(ctx)
condition := newTaskCondition()
baseTask := &baseTask{
ctx: childCtx,
cancel: cancel,
condition: condition,
state: taskUndo,
retryCount: Params.QueryCoordCfg.RetryNum,
triggerCondition: triggerType,
childTasks: []task{},
timeRecorder: timerecord.NewTimeRecorder("QueryCoordBaseTask"),
}
return baseTask
}
func newBaseTaskWithRetry(ctx context.Context, triggerType querypb.TriggerCondition, retryCount int32) *baseTask {
baseTask := newBaseTask(ctx, triggerType)
baseTask.retryCount = retryCount
return baseTask
}
// getTaskID function returns the unique taskID of the trigger task
func (bt *baseTask) getTaskID() UniqueID {
return bt.taskID
}
// setTaskID function sets the trigger task with a unique id, which is allocated by tso
func (bt *baseTask) setTaskID(id UniqueID) {
bt.taskID = id
}
func (bt *baseTask) traceCtx() context.Context {
return bt.ctx
}
func (bt *baseTask) getTriggerCondition() querypb.TriggerCondition {
bt.triggerMu.RLock()
defer bt.triggerMu.RUnlock()
return bt.triggerCondition
}
func (bt *baseTask) setTriggerCondition(trigger querypb.TriggerCondition) {
bt.triggerMu.Lock()
defer bt.triggerMu.Unlock()
bt.triggerCondition = trigger
}
func (bt *baseTask) taskPriority() querypb.TriggerCondition {
return bt.triggerCondition
}
func (bt *baseTask) setParentTask(t task) {
bt.parentTask = t
}
func (bt *baseTask) getParentTask() task {
return bt.parentTask
}
// GetChildTask function returns all the child tasks of the trigger task
// Child task may be loadSegmentTask or watchDmChannelTask
func (bt *baseTask) getChildTask() []task {
bt.childTasksMu.RLock()
defer bt.childTasksMu.RUnlock()
return bt.childTasks
}
func (bt *baseTask) addChildTask(t task) {
bt.childTasksMu.Lock()
defer bt.childTasksMu.Unlock()
bt.childTasks = append(bt.childTasks, t)
}
func (bt *baseTask) removeChildTaskByID(taskID UniqueID) {
bt.childTasksMu.Lock()
defer bt.childTasksMu.Unlock()
result := make([]task, 0)
for _, t := range bt.childTasks {
if t.getTaskID() != taskID {
result = append(result, t)
}
}
bt.childTasks = result
metrics.QueryCoordNumChildTasks.WithLabelValues().Dec()
}
func (bt *baseTask) clearChildTasks() {
bt.childTasksMu.Lock()
defer bt.childTasksMu.Unlock()
bt.childTasks = []task{}
}
func (bt *baseTask) isValid() bool {
return true
}
func (bt *baseTask) reschedule(ctx context.Context) ([]task, error) {
return nil, nil
}
// State returns the state of task, such as taskUndo, taskDoing, taskDone, taskExpired, taskFailed
func (bt *baseTask) getState() taskState {
bt.stateMu.RLock()
defer bt.stateMu.RUnlock()
return bt.state
}
func (bt *baseTask) setState(state taskState) {
bt.stateMu.Lock()
defer bt.stateMu.Unlock()
bt.state = state
}
func (bt *baseTask) isRetryable() bool {
return atomic.LoadInt32(&bt.retryCount) > 0
}
func (bt *baseTask) reduceRetryCount() {
atomic.AddInt32(&bt.retryCount, -1)
}
func (bt *baseTask) setResultInfo(err error) {
bt.resultMu.Lock()
defer bt.resultMu.Unlock()
if err != nil {
bt.setState(taskFailed)
}
if bt.result == nil {
bt.result = &commonpb.Status{}
}
if err == nil {
bt.result.ErrorCode = commonpb.ErrorCode_Success
bt.result.Reason = ""
return
}
bt.result.ErrorCode = commonpb.ErrorCode_UnexpectedError
bt.result.Reason = bt.result.Reason + ", " + err.Error()
}
func (bt *baseTask) getResultInfo() *commonpb.Status {
bt.resultMu.RLock()
defer bt.resultMu.RUnlock()
return proto.Clone(bt.result).(*commonpb.Status)
}
func (bt *baseTask) globalPostExecute(ctx context.Context) error {
return nil
}
func (bt *baseTask) updateTaskProcess() {
// TODO::
}
func (bt *baseTask) rollBack(ctx context.Context) []task {
//TODO::
return nil
}
func (bt *baseTask) elapseSpan() time.Duration {
return bt.timeRecorder.ElapseSpan()
}
// finishContext calls the cancel function for the trace ctx.
func (bt *baseTask) finishContext() {
if bt.cancel != nil {
bt.cancel()
}
}
type loadCollectionTask struct {
*baseTask
*querypb.LoadCollectionRequest
broker *globalMetaBroker
cluster Cluster
meta Meta
once sync.Once
}
func (lct *loadCollectionTask) msgBase() *commonpb.MsgBase {
return lct.Base
}
func (lct *loadCollectionTask) marshal() ([]byte, error) {
return proto.Marshal(lct.LoadCollectionRequest)
}
func (lct *loadCollectionTask) msgType() commonpb.MsgType {
return lct.Base.MsgType
}
func (lct *loadCollectionTask) timestamp() Timestamp {
return lct.Base.Timestamp
}
func (lct *loadCollectionTask) updateTaskProcess() {
//TODO move check all child task done to globalPostExecute
//this function shall just calculate intermediate progress
}
func checkLoadCollection(req *querypb.LoadCollectionRequest, meta Meta) error {
collectionID := req.CollectionID
collectionInfo, err := meta.getCollectionInfoByID(collectionID)
if err == nil {
// if collection has been loaded by load collection request, return success
if collectionInfo.LoadType == querypb.LoadType_LoadCollection {
if collectionInfo.ReplicaNumber != req.ReplicaNumber {
msg := fmt.Sprintf("collection has already been loaded, and the number of replicas %v is not same as the request's %v. Should release first then reload with the new number of replicas",
collectionInfo.ReplicaNumber,
req.ReplicaNumber)
log.Warn(msg,
zap.String("role", typeutil.QueryCoordRole),
zap.Int64("collectionID", collectionID),
zap.Int64("msgID", req.Base.MsgID),
zap.Int32("collectionReplicaNumber", collectionInfo.ReplicaNumber),
zap.Int32("requestReplicaNumber", req.ReplicaNumber))
return fmt.Errorf(msg+" [%w]", ErrLoadParametersMismatch)
}
return ErrCollectionLoaded
} else if collectionInfo.LoadType == querypb.LoadType_LoadPartition {
// if some partitions of the collection have been loaded by load partitions request, return error
// should release partitions first, then load collection again
err = fmt.Errorf("some partitions %v of collection %d has been loaded into QueryNode, please release partitions firstly",
collectionInfo.PartitionIDs, collectionID)
log.Warn("loadCollectionRequest failed",
zap.String("role", typeutil.QueryCoordRole),
zap.Int64("collectionID", collectionID),
zap.Int64s("loaded partitionIDs", collectionInfo.PartitionIDs),
zap.Int64("msgID", req.Base.MsgID),
zap.Error(err))
metrics.QueryCoordLoadCount.WithLabelValues(metrics.FailLabel).Inc()
return fmt.Errorf(err.Error()+" [%w]", ErrLoadParametersMismatch)
}
}
return nil
}
func (lct *loadCollectionTask) preExecute(ctx context.Context) error {
if lct.ReplicaNumber < 1 {
log.Warn("replicaNumber is less than 1 for load collection request, will set it to 1",
zap.Int32("replicaNumber", lct.ReplicaNumber))
lct.ReplicaNumber = 1
}
collectionID := lct.CollectionID
schema := lct.Schema
lct.setResultInfo(nil)
err := checkLoadCollection(lct.LoadCollectionRequest, lct.meta)
if err != nil {
lct.setResultInfo(err)
return err
}
log.Info("start do loadCollectionTask",
zap.Int64("taskID", lct.getTaskID()),
zap.Int64("msgID", lct.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Stringer("schema", schema),
zap.Int32("replicaNumber", lct.ReplicaNumber))
return nil
}
func (lct *loadCollectionTask) execute(ctx context.Context) error {
defer lct.reduceRetryCount()
collectionID := lct.CollectionID
partitionIds, err := lct.broker.showPartitionIDs(ctx, collectionID)
if err != nil {
log.Error("loadCollectionTask: showPartition failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
lct.setResultInfo(err)
return err
}
log.Info("loadCollectionTask: get collection's all partitionIDs", zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIds), zap.Int64("msgID", lct.Base.MsgID))
var (
replicas = make([]*milvuspb.ReplicaInfo, lct.ReplicaNumber)
replicaIds = make([]int64, lct.ReplicaNumber)
segmentLoadInfos = make([]*querypb.SegmentLoadInfo, 0)
deltaChannelInfos = make([]*datapb.VchannelInfo, 0)
dmChannelInfos = make([]*datapb.VchannelInfo, 0)
collectionSize uint64
)
for _, partitionID := range partitionIds {
vChannelInfos, binlogs, err := lct.broker.getRecoveryInfo(lct.ctx, collectionID, partitionID)
if err != nil {
log.Error("loadCollectionTask: getRecoveryInfo failed", zap.Int64("collectionID", collectionID), zap.Int64("partitionID", partitionID), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
lct.setResultInfo(err)
return err
}
for _, segmentBinlog := range binlogs {
segmentLoadInfo := lct.broker.generateSegmentLoadInfo(ctx, collectionID, partitionID, segmentBinlog, true, lct.Schema)
collectionSize += uint64(segmentLoadInfo.SegmentSize)
segmentLoadInfos = append(segmentLoadInfos, segmentLoadInfo)
}
for _, info := range vChannelInfos {
deltaChannelInfo, err := generateWatchDeltaChannelInfo(info)
if err != nil {
log.Error("loadCollectionTask: generateWatchDeltaChannelInfo failed", zap.Int64("collectionID", collectionID), zap.String("channelName", info.ChannelName), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
lct.setResultInfo(err)
return err
}
deltaChannelInfos = append(deltaChannelInfos, deltaChannelInfo)
dmChannelInfos = append(dmChannelInfos, info)
}
}
mergedDeltaChannels := mergeWatchDeltaChannelInfo(deltaChannelInfos)
// If meta is not updated here, deltaChannel meta will not be available when loadSegment reschedule
err = lct.meta.setDeltaChannel(collectionID, mergedDeltaChannels)
if err != nil {
log.Error("loadCollectionTask: set delta channel info failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
lct.setResultInfo(err)
return err
}
mergedDmChannel := mergeDmChannelInfo(dmChannelInfos)
for i := range replicas {
replica, err := lct.meta.generateReplica(lct.CollectionID, partitionIds)
if err != nil {
lct.setResultInfo(err)
return err
}
replicas[i] = replica
replicaIds[i] = replica.ReplicaID
}
err = lct.cluster.AssignNodesToReplicas(ctx, replicas, collectionSize)
if err != nil {
log.Error("failed to assign nodes to replicas",
zap.Int64("collectionID", collectionID),
zap.Int64s("partitionIDs", partitionIds),
zap.Int64("msgID", lct.Base.MsgID),
zap.Int32("replicaNumber", lct.ReplicaNumber),
zap.Error(err))
lct.setResultInfo(err)
return err
}
for _, replica := range replicas {
var (
loadSegmentReqs = []*querypb.LoadSegmentsRequest{}
watchDmChannelReqs = []*querypb.WatchDmChannelsRequest{}
)
for _, segmentLoadInfo := range segmentLoadInfos {
msgBase := proto.Clone(lct.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_LoadSegments
loadSegmentReq := &querypb.LoadSegmentsRequest{
Base: msgBase,
Infos: []*querypb.SegmentLoadInfo{segmentLoadInfo},
Schema: lct.Schema,
CollectionID: collectionID,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: querypb.LoadType_LoadCollection,
CollectionID: collectionID,
PartitionIDs: partitionIds,
},
ReplicaID: replica.ReplicaID,
}
loadSegmentReqs = append(loadSegmentReqs, loadSegmentReq)
}
//TODO:: queryNode receive dm message according partitionID cache
//TODO:: queryNode add partitionID to cache if receive create partition message from dmChannel
for _, info := range mergedDmChannel {
msgBase := proto.Clone(lct.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_WatchDmChannels
watchRequest := &querypb.WatchDmChannelsRequest{
Base: msgBase,
CollectionID: collectionID,
//PartitionIDs: toLoadPartitionIDs,
Infos: []*datapb.VchannelInfo{info},
Schema: lct.Schema,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: querypb.LoadType_LoadCollection,
CollectionID: collectionID,
PartitionIDs: partitionIds,
},
ReplicaID: replica.GetReplicaID(),
}
fullWatchRequest, err := generateFullWatchDmChannelsRequest(ctx, lct.broker, watchRequest)
if err != nil {
lct.setResultInfo(err)
return err
}
watchDmChannelReqs = append(watchDmChannelReqs, fullWatchRequest)
}
internalTasks, err := assignInternalTask(ctx, lct, lct.meta, lct.cluster, loadSegmentReqs, watchDmChannelReqs, false, nil, replica.GetNodeIds(), -1, lct.broker)
if err != nil {
log.Error("loadCollectionTask: assign child task failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
lct.setResultInfo(err)
return err
}
for _, internalTask := range internalTasks {
lct.addChildTask(internalTask)
if task, ok := internalTask.(*watchDmChannelTask); ok {
nodeInfo, err := lct.cluster.GetNodeInfoByID(task.NodeID)
if err != nil {
log.Error("loadCollectionTask: get shard leader node info failed",
zap.Int64("collectionID", collectionID),
zap.Int64("msgID", lct.Base.MsgID),
zap.Int64("nodeID", task.NodeID),
zap.Error(err))
lct.setResultInfo(err)
return err
}
replica.ShardReplicas = append(replica.ShardReplicas, &milvuspb.ShardReplica{
LeaderID: task.NodeID,
LeaderAddr: nodeInfo.(*queryNode).address,
DmChannelName: task.WatchDmChannelsRequest.Infos[0].ChannelName,
})
}
log.Info("loadCollectionTask: add a childTask", zap.Int64("collectionID", collectionID), zap.String("task type", internalTask.msgType().String()), zap.Int64("msgID", lct.Base.MsgID))
}
metrics.QueryCoordNumChildTasks.WithLabelValues().Add(float64(len(internalTasks)))
log.Info("loadCollectionTask: assign child task done", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lct.Base.MsgID))
}
err = lct.meta.addCollection(collectionID, querypb.LoadType_LoadCollection, lct.Schema)
if err != nil {
log.Error("loadCollectionTask: add collection to meta failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
lct.setResultInfo(err)
return err
}
err = lct.meta.addPartitions(collectionID, partitionIds)
if err != nil {
log.Error("loadCollectionTask: add partitions to meta failed", zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIds), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
lct.setResultInfo(err)
return err
}
for _, replica := range replicas {
err = lct.meta.addReplica(replica)
if err != nil {
log.Error("failed to add replica", zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIds), zap.Int64("msgID", lct.Base.MsgID), zap.Int32("replicaNumber", lct.ReplicaNumber))
lct.setResultInfo(err)
return err
}
}
log.Info("LoadCollection execute done",
zap.Int64("msgID", lct.getTaskID()),
zap.Int64("collectionID", collectionID))
return nil
}
func (lct *loadCollectionTask) postExecute(ctx context.Context) error {
collectionID := lct.CollectionID
if lct.getResultInfo().ErrorCode != commonpb.ErrorCode_Success {
lct.clearChildTasks()
}
log.Info("loadCollectionTask postExecute done",
zap.Int64("taskID", lct.getTaskID()),
zap.Int64("msgID", lct.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID))
return nil
}
func (lct *loadCollectionTask) globalPostExecute(ctx context.Context) error {
collection, err := lct.meta.getCollectionInfoByID(lct.CollectionID)
if err != nil {
log.Error("loadCollectionTask: failed to get collection info from meta",
zap.Int64("taskID", lct.getTaskID()),
zap.Int64("msgID", lct.GetBase().GetMsgID()),
zap.Int64("collectionID", lct.CollectionID),
zap.Error(err))
return err
}
for _, replica := range collection.ReplicaIds {
err := syncReplicaSegments(lct.ctx, lct.meta, lct.cluster, replica)
if err != nil {
log.Error("loadCollectionTask: failed to sync replica segments to shard leader",
zap.Int64("taskID", lct.getTaskID()),
zap.Int64("msgID", lct.GetBase().GetMsgID()),
zap.Int64("collectionID", lct.CollectionID),
zap.Error(err))
return err
}
}
err = lct.meta.setLoadPercentage(lct.CollectionID, 0, 100, querypb.LoadType_LoadCollection)
if err != nil {
log.Error("loadCollectionTask: set load percentage to meta's collectionInfo", zap.Int64("collectionID", lct.CollectionID))
lct.setResultInfo(err)
return err
}
lct.once.Do(func() {
metrics.QueryCoordLoadCount.WithLabelValues(metrics.SuccessLabel).Inc()
metrics.QueryCoordLoadLatency.WithLabelValues().Observe(float64(lct.elapseSpan().Milliseconds()))
metrics.QueryCoordNumChildTasks.WithLabelValues().Sub(float64(len(lct.getChildTask())))
})
return nil
}
func (lct *loadCollectionTask) rollBack(ctx context.Context) []task {
onlineNodeIDs := lct.cluster.OnlineNodeIDs()
resultTasks := make([]task, 0)
for _, nodeID := range onlineNodeIDs {
//brute force rollBack, should optimize
msgBase := proto.Clone(lct.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_ReleaseCollection
req := &querypb.ReleaseCollectionRequest{
Base: msgBase,
DbID: lct.DbID,
CollectionID: lct.CollectionID,
NodeID: nodeID,
}
baseTask := newBaseTask(ctx, querypb.TriggerCondition_GrpcRequest)
baseTask.setParentTask(lct)
releaseCollectionTask := &releaseCollectionTask{
baseTask: baseTask,
ReleaseCollectionRequest: req,
cluster: lct.cluster,
}
resultTasks = append(resultTasks, releaseCollectionTask)
}
err := lct.meta.releaseCollection(lct.CollectionID)
if err != nil {
log.Error("releaseCollectionTask: release collectionInfo from meta failed", zap.Int64("collectionID", lct.CollectionID), zap.Int64("msgID", lct.Base.MsgID), zap.Error(err))
panic(err)
}
log.Info("loadCollectionTask: generate rollBack task for loadCollectionTask", zap.Int64("collectionID", lct.CollectionID), zap.Int64("msgID", lct.Base.MsgID))
return resultTasks
}
// releaseCollectionTask will release all the data of this collection on query nodes
type releaseCollectionTask struct {
*baseTask
*querypb.ReleaseCollectionRequest
cluster Cluster
meta Meta
broker *globalMetaBroker
}
func (rct *releaseCollectionTask) msgBase() *commonpb.MsgBase {
return rct.Base
}
func (rct *releaseCollectionTask) marshal() ([]byte, error) {
return proto.Marshal(rct.ReleaseCollectionRequest)
}
func (rct *releaseCollectionTask) msgType() commonpb.MsgType {
return rct.Base.MsgType
}
func (rct *releaseCollectionTask) timestamp() Timestamp {
return rct.Base.Timestamp
}
func (rct *releaseCollectionTask) updateTaskProcess() {
collectionID := rct.CollectionID
parentTask := rct.getParentTask()
if parentTask == nil {
// all queryNodes have successfully released the data, clean up collectionMeta
err := rct.meta.releaseCollection(collectionID)
if err != nil {
log.Error("releaseCollectionTask: release collectionInfo from meta failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", rct.Base.MsgID), zap.Error(err))
panic(err)
}
}
}
func (rct *releaseCollectionTask) preExecute(context.Context) error {
collectionID := rct.CollectionID
rct.setResultInfo(nil)
log.Info("pre execute releaseCollectionTask",
zap.Int64("taskID", rct.getTaskID()),
zap.Int64("msgID", rct.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID))
return nil
}
func (rct *releaseCollectionTask) execute(ctx context.Context) error {
collectionID := rct.CollectionID
// if nodeID ==0, it means that the release request has not been assigned to the specified query node
if rct.NodeID <= 0 {
// invalidate all the collection meta cache with the specified collectionID
err := rct.broker.invalidateCollectionMetaCache(ctx, collectionID)
if err != nil {
log.Error("releaseCollectionTask: release collection end, invalidateCollectionMetaCache occur error", zap.Int64("collectionID", rct.CollectionID), zap.Int64("msgID", rct.Base.MsgID), zap.Error(err))
rct.setResultInfo(err)
return err
}
// TODO(yah01): broadcast to all nodes? Or only nodes serve the collection
onlineNodeIDs := rct.cluster.OnlineNodeIDs()
for _, nodeID := range onlineNodeIDs {
req := proto.Clone(rct.ReleaseCollectionRequest).(*querypb.ReleaseCollectionRequest)
req.NodeID = nodeID
baseTask := newBaseTask(ctx, querypb.TriggerCondition_GrpcRequest)
baseTask.setParentTask(rct)
releaseCollectionTask := &releaseCollectionTask{
baseTask: baseTask,
ReleaseCollectionRequest: req,
cluster: rct.cluster,
}
rct.addChildTask(releaseCollectionTask)
log.Info("releaseCollectionTask: add a releaseCollectionTask to releaseCollectionTask's childTask", zap.Any("task", releaseCollectionTask), zap.Int64("NodeID", nodeID))
}
} else {
// If the node crashed or be offline, the loaded segments are lost
defer rct.reduceRetryCount()
err := rct.cluster.ReleaseCollection(ctx, rct.NodeID, rct.ReleaseCollectionRequest)
if err != nil {
log.Warn("releaseCollectionTask: release collection end, node occur error", zap.Int64("collectionID", collectionID), zap.Int64("nodeID", rct.NodeID), zap.Error(err))
// after release failed, the task will always redo
// if the query node happens to be down, the node release was judged to have succeeded
return err
}
}
log.Info("releaseCollectionTask Execute done",
zap.Int64("taskID", rct.getTaskID()),
zap.Int64("msgID", rct.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Int64("nodeID", rct.NodeID))
return nil
}
func (rct *releaseCollectionTask) postExecute(context.Context) error {
collectionID := rct.CollectionID
if rct.getResultInfo().ErrorCode != commonpb.ErrorCode_Success {
rct.clearChildTasks()
}
log.Info("releaseCollectionTask postExecute done",
zap.Int64("taskID", rct.getTaskID()),
zap.Int64("msgID", rct.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Int64("nodeID", rct.NodeID))
return nil
}
func (rct *releaseCollectionTask) rollBack(ctx context.Context) []task {
//TODO::
//if taskID == 0, recovery meta
//if taskID != 0, recovery collection on queryNode
return nil
}
// loadPartitionTask will load all the data of this partition to query nodes
type loadPartitionTask struct {
*baseTask
*querypb.LoadPartitionsRequest
broker *globalMetaBroker
cluster Cluster
meta Meta
addCol bool
once sync.Once
}
func (lpt *loadPartitionTask) msgBase() *commonpb.MsgBase {
return lpt.Base
}
func (lpt *loadPartitionTask) marshal() ([]byte, error) {
return proto.Marshal(lpt.LoadPartitionsRequest)
}
func (lpt *loadPartitionTask) msgType() commonpb.MsgType {
return lpt.Base.MsgType
}
func (lpt *loadPartitionTask) timestamp() Timestamp {
return lpt.Base.Timestamp
}
func (lpt *loadPartitionTask) updateTaskProcess() {
//TODO move check all child task done to globalPostExecute
//this function shall just calculate intermediate progress
}
func checkLoadPartition(req *querypb.LoadPartitionsRequest, meta Meta) error {
collectionID := req.CollectionID
collectionInfo, err := meta.getCollectionInfoByID(collectionID)
if err == nil {
// if the collection has been loaded into memory by load collection request, return error
// should release collection first, then load partitions again
if collectionInfo.LoadType == querypb.LoadType_LoadCollection {
err = fmt.Errorf("collection %d has been loaded into QueryNode, please release collection firstly", collectionID)
return fmt.Errorf(err.Error()+" [%w]", ErrLoadParametersMismatch)
} else if collectionInfo.LoadType == querypb.LoadType_LoadPartition {
if collectionInfo.ReplicaNumber != req.ReplicaNumber {
msg := fmt.Sprintf("partitions has already been loaded, and the number of replicas %v is not same as the request's %v. Should release first then reload with the new number of replicas",
collectionInfo.ReplicaNumber,
req.ReplicaNumber)
log.Warn(msg,
zap.String("role", typeutil.QueryCoordRole),
zap.Int64("collectionID", collectionID),
zap.Int64("msgID", req.Base.MsgID),
zap.Int32("collectionReplicaNumber", collectionInfo.ReplicaNumber),
zap.Int32("requestReplicaNumber", req.ReplicaNumber))
return fmt.Errorf(msg+" [%w]", ErrLoadParametersMismatch)
}
for _, toLoadPartitionID := range req.PartitionIDs {
needLoad := true
for _, loadedPartitionID := range collectionInfo.PartitionIDs {
if toLoadPartitionID == loadedPartitionID {
needLoad = false
break
}
}
if needLoad {
// if new partitions need to be loaded, return error
// should release partitions first, then load partitions again
err = fmt.Errorf("some partitions %v of collection %d has been loaded into QueryNode, please release partitions firstly",
collectionInfo.PartitionIDs, collectionID)
return fmt.Errorf(err.Error()+" [%w]", ErrLoadParametersMismatch)
}
}
}
log.Info("loadPartitionRequest completed, all partitions to load have already been loaded into memory",
zap.String("role", typeutil.QueryCoordRole),
zap.Int64("collectionID", req.CollectionID),
zap.Int64s("partitionIDs", req.PartitionIDs),
zap.Int64("msgID", req.Base.MsgID))
return ErrCollectionLoaded
}
return nil
}
func (lpt *loadPartitionTask) preExecute(context.Context) error {
if lpt.ReplicaNumber < 1 {
log.Warn("replicaNumber is less than 1 for load partitions request, will set it to 1",
zap.Int32("replicaNumber", lpt.ReplicaNumber))
lpt.ReplicaNumber = 1
}
lpt.setResultInfo(nil)
err := checkLoadPartition(lpt.LoadPartitionsRequest, lpt.meta)
if err != nil {
lpt.setResultInfo(err)
return err
}
log.Info("start do loadPartitionTask",
zap.Int64("taskID", lpt.getTaskID()),
zap.Int64("msgID", lpt.GetBase().GetMsgID()),
zap.Int64("collectionID", lpt.GetCollectionID()))
return nil
}
func (lpt *loadPartitionTask) execute(ctx context.Context) error {
defer lpt.reduceRetryCount()
collectionID := lpt.CollectionID
partitionIDs := lpt.PartitionIDs
var (
replicas = make([]*milvuspb.ReplicaInfo, lpt.ReplicaNumber)
replicaIds = make([]int64, lpt.ReplicaNumber)
segmentLoadInfos = make([]*querypb.SegmentLoadInfo, 0)
deltaChannelInfos = make([]*datapb.VchannelInfo, 0)
dmChannelInfos = make([]*datapb.VchannelInfo, 0)
collectionSize uint64
)
for _, partitionID := range partitionIDs {
vChannelInfos, binlogs, err := lpt.broker.getRecoveryInfo(lpt.ctx, collectionID, partitionID)
if err != nil {
log.Error("loadPartitionTask: getRecoveryInfo failed", zap.Int64("collectionID", collectionID), zap.Int64("partitionID", partitionID), zap.Int64("msgID", lpt.Base.MsgID), zap.Error(err))
lpt.setResultInfo(err)
return err
}
for _, segmentBingLog := range binlogs {
segmentLoadInfo := lpt.broker.generateSegmentLoadInfo(ctx, collectionID, partitionID, segmentBingLog, true, lpt.Schema)
segmentLoadInfos = append(segmentLoadInfos, segmentLoadInfo)
collectionSize += uint64(segmentLoadInfo.SegmentSize)
}
for _, info := range vChannelInfos {
deltaChannelInfo, err := generateWatchDeltaChannelInfo(info)
if err != nil {
log.Error("loadPartitionTask: generateWatchDeltaChannelInfo failed", zap.Int64("collectionID", collectionID), zap.String("channelName", info.ChannelName), zap.Int64("msgID", lpt.Base.MsgID), zap.Error(err))
lpt.setResultInfo(err)
return err
}
deltaChannelInfos = append(deltaChannelInfos, deltaChannelInfo)
dmChannelInfos = append(dmChannelInfos, info)
}
}
mergedDeltaChannels := mergeWatchDeltaChannelInfo(deltaChannelInfos)
// If meta is not updated here, deltaChannel meta will not be available when loadSegment reschedule
err := lpt.meta.setDeltaChannel(collectionID, mergedDeltaChannels)
if err != nil {
log.Error("loadPartitionTask: set delta channel info failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lpt.Base.MsgID), zap.Error(err))
lpt.setResultInfo(err)
return err
}
mergedDmChannel := mergeDmChannelInfo(dmChannelInfos)
for i := range replicas {
replica, err := lpt.meta.generateReplica(lpt.CollectionID, partitionIDs)
if err != nil {
lpt.setResultInfo(err)
return err
}
replicas[i] = replica
replicaIds[i] = replica.ReplicaID
}
err = lpt.cluster.AssignNodesToReplicas(ctx, replicas, collectionSize)
if err != nil {
log.Error("failed to assign nodes to replicas",
zap.Int64("collectionID", collectionID),
zap.Int64s("partitionIDs", partitionIDs),
zap.Int64("msgID", lpt.Base.MsgID),
zap.Int32("replicaNumber", lpt.ReplicaNumber),
zap.Error(err))
lpt.setResultInfo(err)
return err
}
for _, replica := range replicas {
var (
loadSegmentReqs = []*querypb.LoadSegmentsRequest{}
watchDmChannelReqs = []*querypb.WatchDmChannelsRequest{}
)
for _, segmentLoadInfo := range segmentLoadInfos {
msgBase := proto.Clone(lpt.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_LoadSegments
loadSegmentReq := &querypb.LoadSegmentsRequest{
Base: msgBase,
Infos: []*querypb.SegmentLoadInfo{segmentLoadInfo},
Schema: lpt.Schema,
CollectionID: collectionID,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: querypb.LoadType_LoadPartition,
CollectionID: collectionID,
PartitionIDs: partitionIDs,
},
ReplicaID: replica.ReplicaID,
}
loadSegmentReqs = append(loadSegmentReqs, loadSegmentReq)
}
for _, info := range mergedDmChannel {
msgBase := proto.Clone(lpt.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_WatchDmChannels
watchRequest := &querypb.WatchDmChannelsRequest{
Base: msgBase,
CollectionID: collectionID,
PartitionIDs: partitionIDs,
Infos: []*datapb.VchannelInfo{info},
Schema: lpt.Schema,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: querypb.LoadType_LoadPartition,
CollectionID: collectionID,
PartitionIDs: partitionIDs,
},
ReplicaID: replica.GetReplicaID(),
}
fullWatchRequest, err := generateFullWatchDmChannelsRequest(ctx, lpt.broker, watchRequest)
if err != nil {
lpt.setResultInfo(err)
return err
}
watchDmChannelReqs = append(watchDmChannelReqs, fullWatchRequest)
}
internalTasks, err := assignInternalTask(ctx, lpt, lpt.meta, lpt.cluster, loadSegmentReqs, watchDmChannelReqs, false, nil, replica.GetNodeIds(), -1, lpt.broker)
if err != nil {
log.Error("loadPartitionTask: assign child task failed", zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIDs), zap.Int64("msgID", lpt.Base.MsgID), zap.Error(err))
lpt.setResultInfo(err)
return err
}
for _, internalTask := range internalTasks {
lpt.addChildTask(internalTask)
if task, ok := internalTask.(*watchDmChannelTask); ok {
nodeInfo, err := lpt.cluster.GetNodeInfoByID(task.NodeID)
if err != nil {
log.Error("loadCollectionTask: get shard leader node info failed",
zap.Int64("collectionID", collectionID),
zap.Int64("msgID", lpt.Base.MsgID),
zap.Int64("nodeID", task.NodeID),
zap.Error(err))
lpt.setResultInfo(err)
return err
}
replica.ShardReplicas = append(replica.ShardReplicas, &milvuspb.ShardReplica{
LeaderID: task.NodeID,
LeaderAddr: nodeInfo.(*queryNode).address,
DmChannelName: task.WatchDmChannelsRequest.Infos[0].ChannelName,
})
}
log.Info("loadPartitionTask: add a childTask", zap.Int64("collectionID", collectionID), zap.String("task type", internalTask.msgType().String()))
}
metrics.QueryCoordNumChildTasks.WithLabelValues().Add(float64(len(internalTasks)))
log.Info("loadPartitionTask: assign child task done", zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIDs), zap.Int64("msgID", lpt.Base.MsgID))
}
err = lpt.meta.addCollection(collectionID, querypb.LoadType_LoadPartition, lpt.Schema)
if err != nil {
log.Error("loadPartitionTask: add collection to meta failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lpt.Base.MsgID), zap.Error(err))
lpt.setResultInfo(err)
return err
}
err = lpt.meta.addPartitions(collectionID, partitionIDs)
if err != nil {
log.Error("loadPartitionTask: add partition to meta failed", zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIDs), zap.Int64("msgID", lpt.Base.MsgID), zap.Error(err))
lpt.setResultInfo(err)
return err
}
for _, replica := range replicas {
err = lpt.meta.addReplica(replica)
if err != nil {
log.Error("failed to add replica", zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIDs), zap.Int64("msgID", lpt.Base.MsgID), zap.Int32("replicaNumber", lpt.ReplicaNumber))
lpt.setResultInfo(err)
return err
}
}
log.Info("loadPartitionTask Execute done",
zap.Int64("taskID", lpt.getTaskID()),
zap.Int64("msgID", lpt.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Int64s("partitionIDs", partitionIDs))
return nil
}
func (lpt *loadPartitionTask) postExecute(ctx context.Context) error {
collectionID := lpt.CollectionID
partitionIDs := lpt.PartitionIDs
if lpt.getResultInfo().ErrorCode != commonpb.ErrorCode_Success {
lpt.clearChildTasks()
}
log.Info("loadPartitionTask postExecute done",
zap.Int64("taskID", lpt.getTaskID()),
zap.Int64("msgID", lpt.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Int64s("partitionIDs", partitionIDs))
return nil
}
func (lpt *loadPartitionTask) globalPostExecute(ctx context.Context) error {
collectionID := lpt.CollectionID
partitionIDs := lpt.PartitionIDs
collection, err := lpt.meta.getCollectionInfoByID(collectionID)
if err != nil {
log.Error("loadPartitionTask: failed to get collection info from meta",
zap.Int64("taskID", lpt.getTaskID()),
zap.Int64("collectionID", collectionID),
zap.Error(err))
return err
}
for _, replica := range collection.ReplicaIds {
err := syncReplicaSegments(lpt.ctx, lpt.meta, lpt.cluster, replica)
if err != nil {
log.Error("loadPartitionTask: failed to sync replica segments to shard leader",
zap.Int64("taskID", lpt.getTaskID()),
zap.Int64("collectionID", collectionID),
zap.Error(err))
return err
}
}
for _, id := range partitionIDs {
err := lpt.meta.setLoadPercentage(collectionID, id, 100, querypb.LoadType_LoadPartition)
if err != nil {
log.Error("loadPartitionTask: set load percentage to meta's collectionInfo", zap.Int64("collectionID", collectionID), zap.Int64("partitionID", id))
lpt.setResultInfo(err)
return err
}
}
lpt.once.Do(func() {
metrics.QueryCoordLoadCount.WithLabelValues(metrics.SuccessLabel).Inc()
metrics.QueryCoordLoadLatency.WithLabelValues().Observe(float64(lpt.elapseSpan().Milliseconds()))
metrics.QueryCoordNumChildTasks.WithLabelValues().Sub(float64(len(lpt.getChildTask())))
})
return nil
}
func (lpt *loadPartitionTask) rollBack(ctx context.Context) []task {
collectionID := lpt.CollectionID
resultTasks := make([]task, 0)
//brute force rollBack, should optimize
onlineNodeIDs := lpt.cluster.OnlineNodeIDs()
for _, nodeID := range onlineNodeIDs {
req := &querypb.ReleaseCollectionRequest{
Base: &commonpb.MsgBase{
MsgType: commonpb.MsgType_ReleaseCollection,
MsgID: lpt.Base.MsgID,
Timestamp: lpt.Base.Timestamp,
SourceID: lpt.Base.SourceID,
},
DbID: lpt.DbID,
CollectionID: collectionID,
NodeID: nodeID,
}
baseTask := newBaseTask(ctx, querypb.TriggerCondition_GrpcRequest)
baseTask.setParentTask(lpt)
releaseCollectionTask := &releaseCollectionTask{
baseTask: baseTask,
ReleaseCollectionRequest: req,
cluster: lpt.cluster,
}
resultTasks = append(resultTasks, releaseCollectionTask)
}
err := lpt.meta.releaseCollection(collectionID)
if err != nil {
log.Error("loadPartitionTask: release collection info from meta failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lpt.Base.MsgID), zap.Error(err))
panic(err)
}
log.Info("loadPartitionTask: generate rollBack task for loadPartitionTask", zap.Int64("collectionID", collectionID), zap.Int64("msgID", lpt.Base.MsgID))
return resultTasks
}
// releasePartitionTask will release all the data of this partition on query nodes
type releasePartitionTask struct {
*baseTask
*querypb.ReleasePartitionsRequest
cluster Cluster
meta Meta
}
func (rpt *releasePartitionTask) msgBase() *commonpb.MsgBase {
return rpt.Base
}
func (rpt *releasePartitionTask) marshal() ([]byte, error) {
return proto.Marshal(rpt.ReleasePartitionsRequest)
}
func (rpt *releasePartitionTask) msgType() commonpb.MsgType {
return rpt.Base.MsgType
}
func (rpt *releasePartitionTask) timestamp() Timestamp {
return rpt.Base.Timestamp
}
func (rpt *releasePartitionTask) updateTaskProcess() {
collectionID := rpt.CollectionID
partitionIDs := rpt.PartitionIDs
parentTask := rpt.getParentTask()
if parentTask == nil {
// all queryNodes have successfully released the data, clean up collectionMeta
err := rpt.meta.releasePartitions(collectionID, partitionIDs)
if err != nil {
log.Error("releasePartitionTask: release collectionInfo from meta failed", zap.Int64("collectionID", collectionID), zap.Int64("msgID", rpt.Base.MsgID), zap.Error(err))
panic(err)
}
}
}
func (rpt *releasePartitionTask) preExecute(context.Context) error {
collectionID := rpt.CollectionID
partitionIDs := rpt.PartitionIDs
rpt.setResultInfo(nil)
log.Info("start do releasePartitionTask",
zap.Int64("taskID", rpt.getTaskID()),
zap.Int64("msgID", rpt.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Int64s("partitionIDs", partitionIDs))
return nil
}
func (rpt *releasePartitionTask) execute(ctx context.Context) error {
collectionID := rpt.CollectionID
partitionIDs := rpt.PartitionIDs
// if nodeID ==0, it means that the release request has not been assigned to the specified query node
if rpt.NodeID <= 0 {
onlineNodeIDs := rpt.cluster.OnlineNodeIDs()
for _, nodeID := range onlineNodeIDs {
req := proto.Clone(rpt.ReleasePartitionsRequest).(*querypb.ReleasePartitionsRequest)
req.NodeID = nodeID
baseTask := newBaseTask(ctx, querypb.TriggerCondition_GrpcRequest)
baseTask.setParentTask(rpt)
releasePartitionTask := &releasePartitionTask{
baseTask: baseTask,
ReleasePartitionsRequest: req,
cluster: rpt.cluster,
meta: rpt.meta,
}
rpt.addChildTask(releasePartitionTask)
log.Info("releasePartitionTask: add a releasePartitionTask to releasePartitionTask's childTask", zap.Int64("collectionID", collectionID), zap.Int64("msgID", rpt.Base.MsgID))
}
} else {
// If the node crashed or be offline, the loaded segments are lost
defer rpt.reduceRetryCount()
err := rpt.cluster.ReleasePartitions(ctx, rpt.NodeID, rpt.ReleasePartitionsRequest)
if err != nil {
log.Warn("ReleasePartitionsTask: release partition end, node occur error", zap.Int64("collectionID", collectionID), zap.String("nodeID", fmt.Sprintln(rpt.NodeID)))
// after release failed, the task will always redo
// if the query node happens to be down, the node release was judged to have succeeded
return err
}
}
log.Info("releasePartitionTask Execute done",
zap.Int64("taskID", rpt.getTaskID()),
zap.Int64("msgID", rpt.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Int64s("partitionIDs", partitionIDs),
zap.Int64("nodeID", rpt.NodeID))
return nil
}
func (rpt *releasePartitionTask) postExecute(context.Context) error {
collectionID := rpt.CollectionID
partitionIDs := rpt.PartitionIDs
if rpt.getResultInfo().ErrorCode != commonpb.ErrorCode_Success {
rpt.clearChildTasks()
}
log.Info("releasePartitionTask postExecute done",
zap.Int64("taskID", rpt.getTaskID()),
zap.Int64("msgID", rpt.GetBase().GetMsgID()),
zap.Int64("collectionID", collectionID),
zap.Int64s("partitionIDs", partitionIDs),
zap.Int64("nodeID", rpt.NodeID))
return nil
}
func (rpt *releasePartitionTask) rollBack(ctx context.Context) []task {
//TODO::
//if taskID == 0, recovery meta
//if taskID != 0, recovery partition on queryNode
return nil
}
type loadSegmentTask struct {
*baseTask
*querypb.LoadSegmentsRequest
meta Meta
cluster Cluster
excludeNodeIDs []int64
broker *globalMetaBroker
}
func (lst *loadSegmentTask) msgBase() *commonpb.MsgBase {
return lst.Base
}
func (lst *loadSegmentTask) marshal() ([]byte, error) {
return proto.Marshal(lst.LoadSegmentsRequest)
}
func (lst *loadSegmentTask) isValid() bool {
online, err := lst.cluster.IsOnline(lst.DstNodeID)
if err != nil {
return false
}
return lst.ctx != nil && online
}
func (lst *loadSegmentTask) msgType() commonpb.MsgType {
return lst.Base.MsgType
}
func (lst *loadSegmentTask) timestamp() Timestamp {
return lst.Base.Timestamp
}
func (lst *loadSegmentTask) updateTaskProcess() {
parentTask := lst.getParentTask()
if parentTask == nil {
log.Warn("loadSegmentTask: parentTask should not be nil")
return
}
parentTask.updateTaskProcess()
}
func (lst *loadSegmentTask) preExecute(ctx context.Context) error {
segmentIDs := make([]UniqueID, 0)
for _, info := range lst.Infos {
segmentIDs = append(segmentIDs, info.SegmentID)
}
lst.setResultInfo(nil)
log.Info("start do loadSegmentTask",
zap.Int64s("segmentIDs", segmentIDs),
zap.Int64("loaded nodeID", lst.DstNodeID),
zap.Int64("taskID", lst.getTaskID()),
zap.Int64("msgID", lst.GetBase().GetMsgID()))
if err := lst.broker.acquireSegmentsReferLock(ctx, lst.taskID, segmentIDs); err != nil {
log.Error("acquire reference lock on segments failed", zap.Int64s("segmentIDs", segmentIDs),
zap.Error(err))
return err
}
return nil
}
func (lst *loadSegmentTask) execute(ctx context.Context) error {
defer lst.reduceRetryCount()
err := lst.cluster.LoadSegments(ctx, lst.DstNodeID, lst.LoadSegmentsRequest)
if err != nil {
log.Warn("loadSegmentTask: loadSegment occur error", zap.Int64("taskID", lst.getTaskID()), zap.Error(err))
lst.setResultInfo(err)
return err
}
log.Info("loadSegmentTask Execute done",
zap.Int64("taskID", lst.getTaskID()),
zap.Int64("msgID", lst.GetBase().GetMsgID()))
return nil
}
func (lst *loadSegmentTask) postExecute(context.Context) error {
segmentIDs := make([]UniqueID, 0)
for _, info := range lst.Infos {
segmentIDs = append(segmentIDs, info.SegmentID)
}
if err := lst.broker.releaseSegmentReferLock(lst.ctx, lst.taskID, segmentIDs); err != nil {
panic(err)
}
log.Info("loadSegmentTask postExecute done",
zap.Int64("taskID", lst.getTaskID()),
zap.Int64("msgID", lst.GetBase().GetMsgID()))
return nil
}
func (lst *loadSegmentTask) reschedule(ctx context.Context) ([]task, error) {
loadSegmentReqs := make([]*querypb.LoadSegmentsRequest, 0)
for _, info := range lst.Infos {
msgBase := proto.Clone(lst.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_LoadSegments
req := &querypb.LoadSegmentsRequest{
Base: msgBase,
Infos: []*querypb.SegmentLoadInfo{info},
Schema: lst.Schema,
SourceNodeID: lst.SourceNodeID,
CollectionID: lst.CollectionID,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: lst.GetLoadMeta().GetLoadType(),
CollectionID: lst.GetCollectionID(),
PartitionIDs: lst.GetLoadMeta().GetPartitionIDs(),
},
ReplicaID: lst.ReplicaID,
}
loadSegmentReqs = append(loadSegmentReqs, req)
}
if lst.excludeNodeIDs == nil {
lst.excludeNodeIDs = []int64{}
}
lst.excludeNodeIDs = append(lst.excludeNodeIDs, lst.DstNodeID)
reScheduledTasks, err := assignInternalTask(ctx, lst.getParentTask(), lst.meta, lst.cluster, loadSegmentReqs, nil, false, lst.excludeNodeIDs, nil, lst.ReplicaID, lst.broker)
if err != nil {
log.Error("loadSegment reschedule failed", zap.Int64s("excludeNodes", lst.excludeNodeIDs), zap.Int64("taskID", lst.getTaskID()), zap.Error(err))
return nil, err
}
return reScheduledTasks, nil
}
type releaseSegmentTask struct {
*baseTask
*querypb.ReleaseSegmentsRequest
cluster Cluster
leaderID UniqueID
}
func (rst *releaseSegmentTask) msgBase() *commonpb.MsgBase {
return rst.Base
}
func (rst *releaseSegmentTask) marshal() ([]byte, error) {
return proto.Marshal(rst.ReleaseSegmentsRequest)
}
func (rst *releaseSegmentTask) isValid() bool {
online, err := rst.cluster.IsOnline(rst.NodeID)
if err != nil {
return false
}
return rst.ctx != nil && online
}
func (rst *releaseSegmentTask) msgType() commonpb.MsgType {
return rst.Base.MsgType
}
func (rst *releaseSegmentTask) timestamp() Timestamp {
return rst.Base.Timestamp
}
func (rst *releaseSegmentTask) preExecute(context.Context) error {
segmentIDs := rst.SegmentIDs
rst.setResultInfo(nil)
log.Info("start do releaseSegmentTask",
zap.Int64s("segmentIDs", segmentIDs),
zap.Int64("loaded nodeID", rst.NodeID),
zap.Int64("taskID", rst.getTaskID()),
zap.Int64("msgID", rst.GetBase().GetMsgID()))
return nil
}
func (rst *releaseSegmentTask) execute(ctx context.Context) error {
defer rst.reduceRetryCount()
err := rst.cluster.ReleaseSegments(rst.ctx, rst.leaderID, rst.ReleaseSegmentsRequest)
if err != nil {
log.Warn("releaseSegmentTask: releaseSegment occur error", zap.Int64("taskID", rst.getTaskID()))
rst.setResultInfo(err)
return err
}
log.Info("releaseSegmentTask Execute done",
zap.Int64s("segmentIDs", rst.SegmentIDs),
zap.Int64("taskID", rst.getTaskID()),
zap.Int64("msgID", rst.GetBase().GetMsgID()))
return nil
}
func (rst *releaseSegmentTask) postExecute(context.Context) error {
segmentIDs := rst.SegmentIDs
log.Info("releaseSegmentTask postExecute done",
zap.Int64s("segmentIDs", segmentIDs),
zap.Int64("taskID", rst.getTaskID()),
zap.Int64("msgID", rst.GetBase().GetMsgID()))
return nil
}
type watchDmChannelTask struct {
*baseTask
*querypb.WatchDmChannelsRequest
meta Meta
cluster Cluster
excludeNodeIDs []int64
}
func (wdt *watchDmChannelTask) msgBase() *commonpb.MsgBase {
return wdt.Base
}
func (wdt *watchDmChannelTask) marshal() ([]byte, error) {
return proto.Marshal(thinWatchDmChannelsRequest(wdt.WatchDmChannelsRequest))
}
func (wdt *watchDmChannelTask) isValid() bool {
online, err := wdt.cluster.IsOnline(wdt.NodeID)
if err != nil {
return false
}
return wdt.ctx != nil && online
}
func (wdt *watchDmChannelTask) msgType() commonpb.MsgType {
return wdt.Base.MsgType
}
func (wdt *watchDmChannelTask) timestamp() Timestamp {
return wdt.Base.Timestamp
}
func (wdt *watchDmChannelTask) updateTaskProcess() {
parentTask := wdt.getParentTask()
if parentTask == nil {
log.Warn("watchDmChannelTask: parentTask should not be nil")
return
}
parentTask.updateTaskProcess()
}
func (wdt *watchDmChannelTask) preExecute(context.Context) error {
channelInfos := wdt.Infos
channels := make([]string, 0)
for _, info := range channelInfos {
channels = append(channels, info.ChannelName)
}
wdt.setResultInfo(nil)
log.Info("start do watchDmChannelTask",
zap.Strings("dmChannels", channels),
zap.Int64("loaded nodeID", wdt.NodeID),
zap.Int64("taskID", wdt.getTaskID()),
zap.Int64("msgID", wdt.GetBase().GetMsgID()))
return nil
}
func (wdt *watchDmChannelTask) execute(ctx context.Context) error {
defer wdt.reduceRetryCount()
err := wdt.cluster.WatchDmChannels(wdt.ctx, wdt.NodeID, wdt.WatchDmChannelsRequest)
if err != nil {
log.Warn("watchDmChannelTask: watchDmChannel occur error", zap.Int64("taskID", wdt.getTaskID()))
wdt.setResultInfo(err)
return err
}
log.Info("watchDmChannelsTask Execute done",
zap.Int64("taskID", wdt.getTaskID()),
zap.Int64("msgID", wdt.GetBase().GetMsgID()))
return nil
}
func (wdt *watchDmChannelTask) postExecute(context.Context) error {
log.Info("watchDmChannelTask postExecute done",
zap.Int64("taskID", wdt.getTaskID()),
zap.Int64("msgID", wdt.GetBase().GetMsgID()))
return nil
}
func (wdt *watchDmChannelTask) reschedule(ctx context.Context) ([]task, error) {
collectionID := wdt.CollectionID
watchDmChannelReqs := make([]*querypb.WatchDmChannelsRequest, 0)
for _, info := range wdt.Infos {
msgBase := proto.Clone(wdt.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_WatchDmChannels
req := &querypb.WatchDmChannelsRequest{
Base: msgBase,
CollectionID: collectionID,
PartitionIDs: wdt.PartitionIDs,
Infos: []*datapb.VchannelInfo{info},
Schema: wdt.Schema,
SegmentInfos: wdt.SegmentInfos,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: wdt.GetLoadMeta().GetLoadType(),
CollectionID: collectionID,
PartitionIDs: wdt.GetLoadMeta().GetPartitionIDs(),
},
ReplicaID: wdt.GetReplicaID(),
OfflineNodeID: wdt.OfflineNodeID,
}
watchDmChannelReqs = append(watchDmChannelReqs, req)
}
if wdt.excludeNodeIDs == nil {
wdt.excludeNodeIDs = []int64{}
}
wdt.excludeNodeIDs = append(wdt.excludeNodeIDs, wdt.NodeID)
wait2AssignTaskSuccess := false
if wdt.getParentTask().getTriggerCondition() == querypb.TriggerCondition_NodeDown {
wait2AssignTaskSuccess = true
}
reScheduledTasks, err := assignInternalTask(ctx, wdt.parentTask, wdt.meta, wdt.cluster, nil, watchDmChannelReqs, wait2AssignTaskSuccess, wdt.excludeNodeIDs, nil, wdt.ReplicaID, nil)
if err != nil {
log.Error("watchDmChannel reschedule failed", zap.Int64("taskID", wdt.getTaskID()), zap.Int64s("excludeNodes", wdt.excludeNodeIDs), zap.Error(err))
return nil, err
}
return reScheduledTasks, nil
}
//****************************handoff task********************************//
type handoffTask struct {
*baseTask
*querypb.HandoffSegmentsRequest
broker *globalMetaBroker
cluster Cluster
meta Meta
}
func (ht *handoffTask) msgBase() *commonpb.MsgBase {
return ht.Base
}
func (ht *handoffTask) marshal() ([]byte, error) {
return proto.Marshal(ht.HandoffSegmentsRequest)
}
func (ht *handoffTask) msgType() commonpb.MsgType {
return ht.Base.MsgType
}
func (ht *handoffTask) timestamp() Timestamp {
return ht.Base.Timestamp
}
func (ht *handoffTask) preExecute(context.Context) error {
ht.setResultInfo(nil)
segmentIDs := make([]UniqueID, 0)
segmentInfos := ht.HandoffSegmentsRequest.SegmentInfos
for _, info := range segmentInfos {
segmentIDs = append(segmentIDs, info.SegmentID)
}
log.Info("start do handoff segments task",
zap.Int64s("segmentIDs", segmentIDs))
return nil
}
func (ht *handoffTask) execute(ctx context.Context) error {
segmentInfos := ht.HandoffSegmentsRequest.SegmentInfos
for _, segmentInfo := range segmentInfos {
collectionID := segmentInfo.CollectionID
partitionID := segmentInfo.PartitionID
segmentID := segmentInfo.SegmentID
collectionInfo, err := ht.meta.getCollectionInfoByID(collectionID)
if err != nil {
log.Warn("handoffTask: collection has not been loaded into memory", zap.Int64("collectionID", collectionID), zap.Int64("segmentID", segmentID))
continue
}
if collectionInfo.LoadType == querypb.LoadType_LoadCollection && ht.meta.hasReleasePartition(collectionID, partitionID) {
log.Warn("handoffTask: partition has been released", zap.Int64("collectionID", collectionID), zap.Int64("partitionID", partitionID))
continue
}
partitionLoaded := false
for _, id := range collectionInfo.PartitionIDs {
if id == partitionID {
partitionLoaded = true
}
}
if collectionInfo.LoadType != querypb.LoadType_LoadCollection && !partitionLoaded {
log.Warn("handoffTask: partition has not been loaded into memory", zap.Int64("collectionID", collectionID), zap.Int64("partitionID", partitionID), zap.Int64("segmentID", segmentID))
continue
}
// TODO we don't ensure atomicity here, so this could stuck forever
// segment which is compacted to should not exist in query node
_, err = ht.meta.getSegmentInfoByID(segmentID)
if err != nil {
dmChannelInfos, binlogs, err := ht.broker.getRecoveryInfo(ht.ctx, collectionID, partitionID)
if err != nil {
log.Error("handoffTask: getRecoveryInfo failed", zap.Int64("collectionID", collectionID), zap.Int64("partitionID", partitionID), zap.Error(err))
ht.setResultInfo(err)
return err
}
findBinlog := false
var loadSegmentReq *querypb.LoadSegmentsRequest
var watchDeltaChannels []*datapb.VchannelInfo
for _, segmentBinlog := range binlogs {
if segmentBinlog.SegmentID == segmentID {
findBinlog = true
segmentLoadInfo := ht.broker.generateSegmentLoadInfo(ctx, collectionID, partitionID, segmentBinlog, false, nil)
segmentLoadInfo.CompactionFrom = segmentInfo.CompactionFrom
segmentLoadInfo.IndexInfos = segmentInfo.IndexInfos
msgBase := proto.Clone(ht.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_LoadSegments
loadSegmentReq = &querypb.LoadSegmentsRequest{
Base: msgBase,
Infos: []*querypb.SegmentLoadInfo{segmentLoadInfo},
Schema: collectionInfo.Schema,
CollectionID: collectionID,
LoadMeta: &querypb.LoadMetaInfo{
CollectionID: collectionID,
PartitionIDs: collectionInfo.PartitionIDs,
},
}
}
}
for _, info := range dmChannelInfos {
deltaChannel, err := generateWatchDeltaChannelInfo(info)
if err != nil {
return err
}
watchDeltaChannels = append(watchDeltaChannels, deltaChannel)
}
if !findBinlog {
err = fmt.Errorf("segmnet has not been flushed, segmentID is %d", segmentID)
ht.setResultInfo(err)
return err
}
mergedDeltaChannels := mergeWatchDeltaChannelInfo(watchDeltaChannels)
// If meta is not updated here, deltaChannel meta will not be available when loadSegment reschedule
err = ht.meta.setDeltaChannel(collectionID, mergedDeltaChannels)
if err != nil {
log.Error("handoffTask: set delta channel info to meta failed", zap.Int64("collectionID", collectionID), zap.Int64("segmentID", segmentID), zap.Error(err))
ht.setResultInfo(err)
return err
}
replicas, err := ht.meta.getReplicasByCollectionID(collectionID)
if err != nil {
ht.setResultInfo(err)
return err
}
var internalTasks []task
for _, replica := range replicas {
if len(replica.NodeIds) == 0 {
log.Warn("handoffTask: find empty replica", zap.Int64("collectionID", collectionID), zap.Int64("segmentID", segmentID), zap.Int64("replicaID", replica.GetReplicaID()))
err := fmt.Errorf("replica %d of collection %d is empty", replica.GetReplicaID(), collectionID)
ht.setResultInfo(err)
return err
}
// we should copy a request because assignInternalTask will change DstNodeID of LoadSegmentRequest
clonedReq := proto.Clone(loadSegmentReq).(*querypb.LoadSegmentsRequest)
clonedReq.ReplicaID = replica.ReplicaID
tasks, err := assignInternalTask(ctx, ht, ht.meta, ht.cluster, []*querypb.LoadSegmentsRequest{clonedReq}, nil, true, nil, nil, replica.GetReplicaID(), ht.broker)
if err != nil {
log.Error("handoffTask: assign child task failed", zap.Int64("collectionID", collectionID), zap.Int64("segmentID", segmentID), zap.Error(err))
ht.setResultInfo(err)
return err
}
internalTasks = append(internalTasks, tasks...)
}
for _, internalTask := range internalTasks {
ht.addChildTask(internalTask)
log.Info("handoffTask: add a childTask", zap.String("task type", internalTask.msgType().String()), zap.Int64("segmentID", segmentID))
}
} else {
err = fmt.Errorf("sealed segment has been exist on query node, segmentID is %d", segmentID)
log.Error("handoffTask: handoff segment failed", zap.Int64("segmentID", segmentID), zap.Error(err))
ht.setResultInfo(err)
return err
}
}
log.Info("handoffTask: assign child task done", zap.Any("segmentInfos", segmentInfos), zap.Int64("taskID", ht.getTaskID()))
return nil
}
func (ht *handoffTask) postExecute(context.Context) error {
if ht.getResultInfo().ErrorCode != commonpb.ErrorCode_Success {
ht.clearChildTasks()
}
log.Info("handoffTask postExecute done", zap.Int64("taskID", ht.getTaskID()))
return nil
}
func (ht *handoffTask) rollBack(ctx context.Context) []task {
resultTasks := make([]task, 0)
childTasks := ht.getChildTask()
for _, childTask := range childTasks {
if childTask.msgType() == commonpb.MsgType_LoadSegments {
// TODO:: add release segment to rollBack, no release does not affect correctness of query
}
}
return resultTasks
}
type loadBalanceTask struct {
*baseTask
*querypb.LoadBalanceRequest
broker *globalMetaBroker
cluster Cluster
meta Meta
replicaID int64
}
func (lbt *loadBalanceTask) msgBase() *commonpb.MsgBase {
return lbt.Base
}
func (lbt *loadBalanceTask) marshal() ([]byte, error) {
return proto.Marshal(lbt.LoadBalanceRequest)
}
func (lbt *loadBalanceTask) msgType() commonpb.MsgType {
return lbt.Base.MsgType
}
func (lbt *loadBalanceTask) timestamp() Timestamp {
return lbt.Base.Timestamp
}
func (lbt *loadBalanceTask) preExecute(context.Context) error {
lbt.setResultInfo(nil)
log.Info("start do loadBalanceTask",
zap.Int32("trigger type", int32(lbt.triggerCondition)),
zap.Int64s("sourceNodeIDs", lbt.SourceNodeIDs),
zap.Any("balanceReason", lbt.BalanceReason),
zap.Int64("taskID", lbt.getTaskID()))
if lbt.triggerCondition == querypb.TriggerCondition_LoadBalance {
if err := lbt.checkForManualLoadBalance(); err != nil {
lbt.setResultInfo(err)
return err
}
if len(lbt.SourceNodeIDs) == 0 {
err := errors.New("loadBalanceTask: empty source Node list to balance")
log.Error(err.Error())
lbt.setResultInfo(err)
return err
}
}
return nil
}
func (lbt *loadBalanceTask) checkForManualLoadBalance() error {
// check segments belong to the same collection
collectionID := lbt.GetCollectionID()
for _, sid := range lbt.SealedSegmentIDs {
segment, err := lbt.meta.getSegmentInfoByID(sid)
if err != nil {
return err
}
if collectionID == 0 {
collectionID = segment.GetCollectionID()
} else if collectionID != segment.GetCollectionID() {
err := errors.New("segments of a load balance task do not belong to the same collection")
return err
}
}
if collectionID == 0 {
err := errors.New("a load balance task has to specify a collectionID or pass segments of a collection")
return err
}
// check source and dst nodes belong to the same replica
var replicaID int64 = -1
for _, nodeID := range lbt.SourceNodeIDs {
replica, err := lbt.getReplica(nodeID, collectionID)
if err != nil {
return err
}
if replicaID == -1 {
replicaID = replica.GetReplicaID()
} else if replicaID != replica.GetReplicaID() {
err := errors.New("source nodes and destination nodes must be in the same replica group")
return err
}
}
if replicaID == -1 {
return errors.New("source nodes is empty")
}
for _, nodeID := range lbt.DstNodeIDs {
replica, err := lbt.getReplica(nodeID, collectionID)
if err != nil {
return err
}
if replicaID != replica.GetReplicaID() {
err := errors.New("source nodes and destination nodes must be in the same replica group")
return err
}
}
lbt.replicaID = replicaID
log.Info("start do loadBalanceTask",
zap.Int32("trigger type", int32(lbt.triggerCondition)),
zap.Int64s("sourceNodeIDs", lbt.SourceNodeIDs),
zap.Any("balanceReason", lbt.BalanceReason),
zap.Int64("taskID", lbt.getTaskID()))
return nil
}
func (lbt *loadBalanceTask) execute(ctx context.Context) error {
defer lbt.reduceRetryCount()
if lbt.triggerCondition == querypb.TriggerCondition_NodeDown {
err := lbt.processNodeDownLoadBalance(ctx)
if err != nil {
return err
}
} else if lbt.triggerCondition == querypb.TriggerCondition_LoadBalance {
err := lbt.processManualLoadBalance(ctx)
if err != nil {
return err
}
}
log.Info("loadBalanceTask Execute done",
zap.Int32("trigger type", int32(lbt.triggerCondition)),
zap.Int64s("sourceNodeIDs", lbt.SourceNodeIDs),
zap.Any("balanceReason", lbt.BalanceReason),
zap.Int64("taskID", lbt.getTaskID()))
return nil
}
func (lbt *loadBalanceTask) processNodeDownLoadBalance(ctx context.Context) error {
var internalTasks []task
for _, nodeID := range lbt.SourceNodeIDs {
segments := make(map[UniqueID]*querypb.SegmentInfo)
dmChannels := make(map[string]*querypb.DmChannelWatchInfo)
recoveredCollectionIDs := make(typeutil.UniqueSet)
segmentInfos := lbt.meta.getSegmentInfosByNode(nodeID)
for _, segmentInfo := range segmentInfos {
segments[segmentInfo.SegmentID] = segmentInfo
recoveredCollectionIDs.Insert(segmentInfo.CollectionID)
}
dmChannelWatchInfos := lbt.meta.getDmChannelInfosByNodeID(nodeID)
for _, watchInfo := range dmChannelWatchInfos {
dmChannels[watchInfo.DmChannel] = watchInfo
recoveredCollectionIDs.Insert(watchInfo.CollectionID)
}
log.Debug("loadBalanceTask: ready to process segments and channels on offline node",
zap.Int64("taskID", lbt.getTaskID()),
zap.Int("segmentNum", len(segments)),
zap.Int("dmChannelNum", len(dmChannels)))
if len(segments) == 0 && len(dmChannels) == 0 {
log.Debug("loadBalanceTask: no segment/channel on this offline node, skip it",
zap.Int64("taskID", lbt.getTaskID()))
continue
}
for collectionID := range recoveredCollectionIDs {
loadSegmentReqs := make([]*querypb.LoadSegmentsRequest, 0)
watchDmChannelReqs := make([]*querypb.WatchDmChannelsRequest, 0)
collectionInfo, err := lbt.meta.getCollectionInfoByID(collectionID)
if err != nil {
log.Error("loadBalanceTask: get collectionInfo from meta failed", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("collectionID", collectionID), zap.Error(err))
lbt.setResultInfo(err)
return err
}
schema := collectionInfo.Schema
var deltaChannelInfos []*datapb.VchannelInfo
var dmChannelInfos []*datapb.VchannelInfo
var toRecoverPartitionIDs []UniqueID
if collectionInfo.LoadType == querypb.LoadType_LoadCollection {
toRecoverPartitionIDs, err = lbt.broker.showPartitionIDs(ctx, collectionID)
if err != nil {
log.Error("loadBalanceTask: show collection's partitionIDs failed", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("collectionID", collectionID), zap.Error(err))
lbt.setResultInfo(err)
panic(err)
}
} else {
toRecoverPartitionIDs = collectionInfo.PartitionIDs
}
log.Info("loadBalanceTask: get collection's all partitionIDs", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", toRecoverPartitionIDs))
replica, err := lbt.getReplica(nodeID, collectionID)
if err != nil {
// getReplica maybe failed, it will cause the balanceTask execute infinitely
log.Warn("loadBalanceTask: get replica failed", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("collectionID", collectionID), zap.Int64("nodeId", nodeID))
continue
}
for _, partitionID := range toRecoverPartitionIDs {
vChannelInfos, binlogs, err := lbt.broker.getRecoveryInfo(lbt.ctx, collectionID, partitionID)
if err != nil {
log.Error("loadBalanceTask: getRecoveryInfo failed", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("collectionID", collectionID), zap.Int64("partitionID", partitionID), zap.Error(err))
lbt.setResultInfo(err)
panic(err)
}
for _, segmentBingLog := range binlogs {
segmentID := segmentBingLog.SegmentID
if _, ok := segments[segmentID]; ok {
segmentLoadInfo := lbt.broker.generateSegmentLoadInfo(ctx, collectionID, partitionID, segmentBingLog, true, schema)
msgBase := proto.Clone(lbt.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_LoadSegments
loadSegmentReq := &querypb.LoadSegmentsRequest{
Base: msgBase,
Infos: []*querypb.SegmentLoadInfo{segmentLoadInfo},
Schema: schema,
CollectionID: collectionID,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: collectionInfo.LoadType,
CollectionID: collectionID,
PartitionIDs: toRecoverPartitionIDs,
},
ReplicaID: replica.ReplicaID,
}
loadSegmentReqs = append(loadSegmentReqs, loadSegmentReq)
}
}
for _, info := range vChannelInfos {
deltaChannel, err := generateWatchDeltaChannelInfo(info)
if err != nil {
log.Error("loadBalanceTask: generateWatchDeltaChannelInfo failed", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("collectionID", collectionID), zap.String("channelName", info.ChannelName), zap.Error(err))
lbt.setResultInfo(err)
panic(err)
}
deltaChannelInfos = append(deltaChannelInfos, deltaChannel)
dmChannelInfos = append(dmChannelInfos, info)
}
}
mergedDeltaChannel := mergeWatchDeltaChannelInfo(deltaChannelInfos)
// If meta is not updated here, deltaChannel meta will not be available when loadSegment reschedule
err = lbt.meta.setDeltaChannel(collectionID, mergedDeltaChannel)
if err != nil {
log.Error("loadBalanceTask: set delta channel info meta failed", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("collectionID", collectionID), zap.Error(err))
lbt.setResultInfo(err)
panic(err)
}
mergedDmChannel := mergeDmChannelInfo(dmChannelInfos)
for channelName, vChannelInfo := range mergedDmChannel {
if _, ok := dmChannels[channelName]; ok {
msgBase := proto.Clone(lbt.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_WatchDmChannels
watchRequest := &querypb.WatchDmChannelsRequest{
Base: msgBase,
CollectionID: collectionID,
Infos: []*datapb.VchannelInfo{vChannelInfo},
Schema: schema,
LoadMeta: &querypb.LoadMetaInfo{
LoadType: collectionInfo.LoadType,
CollectionID: collectionID,
PartitionIDs: toRecoverPartitionIDs,
},
ReplicaID: replica.ReplicaID,
OfflineNodeID: nodeID,
}
if collectionInfo.LoadType == querypb.LoadType_LoadPartition {
watchRequest.PartitionIDs = toRecoverPartitionIDs
}
fullWatchRequest, err := generateFullWatchDmChannelsRequest(ctx, lbt.broker, watchRequest)
if err != nil {
lbt.setResultInfo(err)
return err
}
watchDmChannelReqs = append(watchDmChannelReqs, fullWatchRequest)
}
}
tasks, err := assignInternalTask(ctx, lbt, lbt.meta, lbt.cluster, loadSegmentReqs, watchDmChannelReqs, false, lbt.SourceNodeIDs, lbt.DstNodeIDs, replica.GetReplicaID(), lbt.broker)
if err != nil {
log.Error("loadBalanceTask: assign child task failed", zap.Int64("taskID", lbt.getTaskID()), zap.Int64("sourceNodeID", nodeID))
lbt.setResultInfo(err)
return err
}
internalTasks = append(internalTasks, tasks...)
}
}
for _, internalTask := range internalTasks {
lbt.addChildTask(internalTask)
log.Info("loadBalanceTask: add a childTask",
zap.Int64("taskID", lbt.getTaskID()),
zap.Any("task", internalTask))
}
log.Info("loadBalanceTask: assign child task done", zap.Int64("taskID", lbt.getTaskID()), zap.Int64s("sourceNodeIDs", lbt.SourceNodeIDs))
return nil
}
func (lbt *loadBalanceTask) processManualLoadBalance(ctx context.Context) error {
balancedSegmentInfos := make(map[UniqueID]*querypb.SegmentInfo)
balancedSegmentIDs := make([]UniqueID, 0)
for _, nodeID := range lbt.SourceNodeIDs {
nodeExist := lbt.cluster.HasNode(nodeID)
if !nodeExist {
err := fmt.Errorf("loadBalanceTask: query node %d is not exist to balance", nodeID)
log.Error(err.Error())
lbt.setResultInfo(err)
return err
}
segmentInfos := lbt.meta.getSegmentInfosByNode(nodeID)
for _, info := range segmentInfos {
balancedSegmentInfos[info.SegmentID] = info
balancedSegmentIDs = append(balancedSegmentIDs, info.SegmentID)
}
}
// check balanced sealedSegmentIDs in request whether exist in query node
for _, segmentID := range lbt.SealedSegmentIDs {
if _, ok := balancedSegmentInfos[segmentID]; !ok {
err := fmt.Errorf("loadBalanceTask: unloaded segment %d", segmentID)
log.Warn(err.Error())
lbt.setResultInfo(err)
return err
}
}
if len(lbt.SealedSegmentIDs) != 0 {
balancedSegmentIDs = lbt.SealedSegmentIDs
}
// TODO(yah01): release balanced segments in source nodes
// balancedSegmentSet := make(typeutil.UniqueSet)
// balancedSegmentSet.Insert(balancedSegmentIDs...)
// for _, nodeID := range lbt.SourceNodeIDs {
// segments := lbt.meta.getSegmentInfosByNode(nodeID)
// shardSegments := make(map[string][]UniqueID)
// for _, segment := range segments {
// if !balancedSegmentSet.Contain(segment.SegmentID) {
// continue
// }
// shardSegments[segment.DmChannel] = append(shardSegments[segment.DmChannel], segment.SegmentID)
// }
// for dmc, segmentIDs := range shardSegments {
// shardLeader, err := getShardLeaderByNodeID(lbt.meta, lbt.replicaID, dmc)
// if err != nil {
// log.Error("failed to get shardLeader",
// zap.Int64("replicaID", lbt.replicaID),
// zap.Int64("nodeID", nodeID),
// zap.String("dmChannel", dmc),
// zap.Error(err))
// lbt.setResultInfo(err)
// return err
// }
// releaseSegmentReq := &querypb.ReleaseSegmentsRequest{
// Base: &commonpb.MsgBase{
// MsgType: commonpb.MsgType_ReleaseSegments,
// },
// NodeID: nodeID,
// SegmentIDs: segmentIDs,
// }
// baseTask := newBaseTask(ctx, querypb.TriggerCondition_LoadBalance)
// lbt.addChildTask(&releaseSegmentTask{
// baseTask: baseTask,
// ReleaseSegmentsRequest: releaseSegmentReq,
// cluster: lbt.cluster,
// leaderID: shardLeader,
// })
// }
// }
col2PartitionIDs := make(map[UniqueID][]UniqueID)
par2Segments := make(map[UniqueID][]*querypb.SegmentInfo)
for _, segmentID := range balancedSegmentIDs {
info := balancedSegmentInfos[segmentID]
collectionID := info.CollectionID
partitionID := info.PartitionID
if _, ok := col2PartitionIDs[collectionID]; !ok {
col2PartitionIDs[collectionID] = make([]UniqueID, 0)
}
if _, ok := par2Segments[partitionID]; !ok {
col2PartitionIDs[collectionID] = append(col2PartitionIDs[collectionID], partitionID)
par2Segments[partitionID] = make([]*querypb.SegmentInfo, 0)
}
par2Segments[partitionID] = append(par2Segments[partitionID], info)
}
loadSegmentReqs := make([]*querypb.LoadSegmentsRequest, 0)
for collectionID, partitionIDs := range col2PartitionIDs {
var watchDeltaChannels []*datapb.VchannelInfo
collectionInfo, err := lbt.meta.getCollectionInfoByID(collectionID)
if err != nil {
log.Error("loadBalanceTask: can't find collectionID in meta", zap.Int64("collectionID", collectionID), zap.Error(err))
lbt.setResultInfo(err)
return err
}
for _, partitionID := range partitionIDs {
dmChannelInfos, binlogs, err := lbt.broker.getRecoveryInfo(lbt.ctx, collectionID, partitionID)
if err != nil {
log.Error("loadBalanceTask: getRecoveryInfo failed", zap.Int64("collectionID", collectionID), zap.Int64("partitionID", partitionID), zap.Error(err))
lbt.setResultInfo(err)
return err
}
segmentID2Binlog := make(map[UniqueID]*datapb.SegmentBinlogs)
for _, binlog := range binlogs {
segmentID2Binlog[binlog.SegmentID] = binlog
}
for _, segmentInfo := range par2Segments[partitionID] {
segmentID := segmentInfo.SegmentID
if _, ok := segmentID2Binlog[segmentID]; !ok {
log.Warn("loadBalanceTask: can't find binlog of segment to balance, may be has been compacted", zap.Int64("segmentID", segmentID))
continue
}
segmentBingLog := segmentID2Binlog[segmentID]
segmentLoadInfo := lbt.broker.generateSegmentLoadInfo(ctx, collectionID, partitionID, segmentBingLog, true, collectionInfo.Schema)
msgBase := proto.Clone(lbt.Base).(*commonpb.MsgBase)
msgBase.MsgType = commonpb.MsgType_LoadSegments
loadSegmentReq := &querypb.LoadSegmentsRequest{
Base: msgBase,
Infos: []*querypb.SegmentLoadInfo{segmentLoadInfo},
Schema: collectionInfo.Schema,
CollectionID: collectionID,
ReplicaID: lbt.replicaID,
LoadMeta: &querypb.LoadMetaInfo{
CollectionID: collectionID,
PartitionIDs: collectionInfo.PartitionIDs,
},
}
loadSegmentReqs = append(loadSegmentReqs, loadSegmentReq)
}
for _, info := range dmChannelInfos {
deltaChannel, err := generateWatchDeltaChannelInfo(info)
if err != nil {
return err
}
watchDeltaChannels = append(watchDeltaChannels, deltaChannel)
}
}
mergedDeltaChannels := mergeWatchDeltaChannelInfo(watchDeltaChannels)
// If meta is not updated here, deltaChannel meta will not be available when loadSegment reschedule
err = lbt.meta.setDeltaChannel(collectionID, mergedDeltaChannels)
if err != nil {
log.Error("loadBalanceTask: set delta channel info to meta failed", zap.Error(err))
lbt.setResultInfo(err)
return err
}
}
internalTasks, err := assignInternalTask(ctx, lbt, lbt.meta, lbt.cluster, loadSegmentReqs, nil, false, lbt.SourceNodeIDs, lbt.DstNodeIDs, lbt.replicaID, lbt.broker)
if err != nil {
log.Error("loadBalanceTask: assign child task failed", zap.Any("balance request", lbt.LoadBalanceRequest))
lbt.setResultInfo(err)
return err
}
for _, internalTask := range internalTasks {
lbt.addChildTask(internalTask)
log.Info("loadBalanceTask: add a childTask",
zap.String("taskType", internalTask.msgType().String()),
zap.Any("request", lbt.LoadBalanceRequest))
}
log.Info("loadBalanceTask: assign child task done", zap.Any("balance request", lbt.LoadBalanceRequest))
return nil
}
func (lbt *loadBalanceTask) getReplica(nodeID, collectionID int64) (*milvuspb.ReplicaInfo, error) {
replicas, err := lbt.meta.getReplicasByNodeID(nodeID)
if err != nil {
return nil, err
}
for _, replica := range replicas {
if replica.GetCollectionID() == collectionID {
return replica, nil
}
}
return nil, fmt.Errorf("unable to find replicas of collection %d and node %d", collectionID, nodeID)
}
func (lbt *loadBalanceTask) postExecute(context.Context) error {
if lbt.getResultInfo().ErrorCode != commonpb.ErrorCode_Success {
lbt.clearChildTasks()
}
log.Info("loadBalanceTask postExecute done",
zap.Int32("trigger type", int32(lbt.triggerCondition)),
zap.Int64s("sourceNodeIDs", lbt.SourceNodeIDs),
zap.Any("balanceReason", lbt.BalanceReason),
zap.Int64("taskID", lbt.getTaskID()),
zap.Int("childTaskNum", len(lbt.childTasks)))
return nil
}
func (lbt *loadBalanceTask) globalPostExecute(ctx context.Context) error {
if lbt.BalanceReason != querypb.TriggerCondition_NodeDown {
return nil
}
replicas := make(map[UniqueID]*milvuspb.ReplicaInfo)
segments := make(map[UniqueID]*querypb.SegmentInfo)
dmChannels := make(map[string]*querypb.DmChannelWatchInfo)
for _, id := range lbt.SourceNodeIDs {
for _, segment := range lbt.meta.getSegmentInfosByNode(id) {
segments[segment.SegmentID] = segment
}
for _, dmChannel := range lbt.meta.getDmChannelInfosByNodeID(id) {
dmChannels[dmChannel.DmChannel] = dmChannel
}
nodeReplicas, err := lbt.meta.getReplicasByNodeID(id)
if err != nil {
log.Warn("failed to get replicas for removing offline querynode from it",
zap.Int64("querynodeID", id),
zap.Error(err))
continue
}
for _, replica := range nodeReplicas {
replicas[replica.ReplicaID] = replica
}
}
log.Debug("removing offline nodes from replicas and segments...",
zap.Int64("triggerTaskID", lbt.getTaskID()),
zap.Int("replicaNum", len(replicas)),
zap.Int("segmentNum", len(segments)))
wg := errgroup.Group{}
// Remove offline nodes from dmChannels
for _, dmChannel := range dmChannels {
dmChannel := dmChannel
wg.Go(func() error {
dmChannel.NodeIds = removeFromSlice(dmChannel.NodeIds, lbt.SourceNodeIDs...)
err := lbt.meta.setDmChannelInfos(dmChannel)
if err != nil {
log.Error("failed to remove offline nodes from dmChannel info",
zap.String("dmChannel", dmChannel.DmChannel),
zap.Error(err))
return err
}
log.Info("remove offline nodes from dmChannel",
zap.Int64("taskID", lbt.getTaskID()),
zap.String("dmChannel", dmChannel.DmChannel),
zap.Int64s("left nodeIds", dmChannel.NodeIds))
return nil
})
}
// Update shard leaders for replicas
for _, childTask := range lbt.getChildTask() {
if task, ok := childTask.(*watchDmChannelTask); ok {
wg.Go(func() error {
leaderID := task.NodeID
dmChannel := task.Infos[0].ChannelName
nodeInfo, err := lbt.cluster.GetNodeInfoByID(leaderID)
if err != nil {
log.Error("failed to get node info to update shard leader info",
zap.Int64("triggerTaskID", lbt.getTaskID()),
zap.Int64("taskID", task.getTaskID()),
zap.Int64("nodeID", leaderID),
zap.String("dmChannel", dmChannel),
zap.Error(err))
return err
}
err = lbt.meta.updateShardLeader(task.ReplicaID, dmChannel, leaderID, nodeInfo.(*queryNode).address)
if err != nil {
log.Error("failed to update shard leader info of replica",
zap.Int64("triggerTaskID", lbt.getTaskID()),
zap.Int64("taskID", task.getTaskID()),
zap.Int64("replicaID", task.ReplicaID),
zap.String("dmChannel", dmChannel),
zap.Error(err))
return err
}
log.Debug("LoadBalance: update shard leader",
zap.Int64("triggerTaskID", lbt.getTaskID()),
zap.Int64("taskID", task.getTaskID()),
zap.String("dmChannel", dmChannel),
zap.Int64("leader", leaderID))
return nil
})
}
}
if err := wg.Wait(); err != nil {
return err
}
// sync segment
for replicaID := range replicas {
err := syncReplicaSegments(lbt.ctx, lbt.meta, lbt.cluster, replicaID)
if err != nil {
log.Error("loadBalanceTask: failed to sync segments distribution",
zap.Int64("collectionID", lbt.CollectionID),
zap.Int64("replicaID", lbt.replicaID),
zap.Error(err))
return err
}
}
// Remove offline nodes from replica
for replicaID := range replicas {
replicaID := replicaID
wg.Go(func() error {
log.Debug("remove offline nodes from replica",
zap.Int64("taskID", lbt.taskID),
zap.Int64("replicaID", replicaID),
zap.Int64s("offlineNodes", lbt.SourceNodeIDs))
return lbt.meta.applyReplicaBalancePlan(
NewRemoveBalancePlan(replicaID, lbt.SourceNodeIDs...))
})
}
if err := wg.Wait(); err != nil {
return err
}
for _, offlineNodeID := range lbt.SourceNodeIDs {
err := lbt.cluster.RemoveNodeInfo(offlineNodeID)
if err != nil {
log.Error("loadBalanceTask: occur error when removing node info from cluster",
zap.Int64("nodeID", offlineNodeID),
zap.Error(err))
lbt.setResultInfo(err)
return err
}
}
return nil
}
func assignInternalTask(ctx context.Context,
parentTask task, meta Meta, cluster Cluster,
loadSegmentRequests []*querypb.LoadSegmentsRequest,
watchDmChannelRequests []*querypb.WatchDmChannelsRequest,
wait bool, excludeNodeIDs []int64, includeNodeIDs []int64, replicaID int64,
broker *globalMetaBroker) ([]task, error) {
internalTasks := make([]task, 0)
err := cluster.AllocateSegmentsToQueryNode(ctx, loadSegmentRequests, wait, excludeNodeIDs, includeNodeIDs, replicaID)
if err != nil {
log.Error("assignInternalTask: assign segment to node failed", zap.Error(err))
return nil, err
}
log.Info("assignInternalTask: assign segment to node success", zap.Int("load segments", len(loadSegmentRequests)))
err = cluster.AllocateChannelsToQueryNode(ctx, watchDmChannelRequests, wait, excludeNodeIDs, includeNodeIDs, replicaID)
if err != nil {
log.Error("assignInternalTask: assign dmChannel to node failed", zap.Error(err))
return nil, err
}
log.Info("assignInternalTask: assign dmChannel to node success", zap.Int("watch dmchannels", len(watchDmChannelRequests)))
if len(loadSegmentRequests) > 0 {
sort.Slice(loadSegmentRequests, func(i, j int) bool {
return loadSegmentRequests[i].CollectionID < loadSegmentRequests[j].CollectionID ||
loadSegmentRequests[i].CollectionID == loadSegmentRequests[j].CollectionID && loadSegmentRequests[i].DstNodeID < loadSegmentRequests[j].DstNodeID
})
batchReq := loadSegmentRequests[0]
batchSize := proto.Size(batchReq)
for _, req := range loadSegmentRequests[1:] {
// Pack current batch, switch to new batch
if req.CollectionID != batchReq.CollectionID || req.DstNodeID != batchReq.DstNodeID ||
batchSize+proto.Size(req) > MaxSendSizeToEtcd {
baseTask := newBaseTask(ctx, parentTask.getTriggerCondition())
baseTask.setParentTask(parentTask)
loadSegmentTask := &loadSegmentTask{
baseTask: baseTask,
LoadSegmentsRequest: batchReq,
meta: meta,
cluster: cluster,
excludeNodeIDs: excludeNodeIDs,
broker: broker,
}
internalTasks = append(internalTasks, loadSegmentTask)
batchReq = req
batchSize = proto.Size(batchReq)
} else {
batchReq.Infos = append(batchReq.Infos, req.Infos...)
batchSize += proto.Size(req)
}
}
// Pack the last batch
baseTask := newBaseTask(ctx, parentTask.getTriggerCondition())
baseTask.setParentTask(parentTask)
loadSegmentTask := &loadSegmentTask{
baseTask: baseTask,
LoadSegmentsRequest: batchReq,
meta: meta,
cluster: cluster,
excludeNodeIDs: excludeNodeIDs,
broker: broker,
}
internalTasks = append(internalTasks, loadSegmentTask)
}
for _, req := range watchDmChannelRequests {
baseTask := newBaseTask(ctx, parentTask.getTriggerCondition())
baseTask.setParentTask(parentTask)
watchDmChannelTask := &watchDmChannelTask{
baseTask: baseTask,
WatchDmChannelsRequest: req,
meta: meta,
cluster: cluster,
excludeNodeIDs: excludeNodeIDs,
}
internalTasks = append(internalTasks, watchDmChannelTask)
}
return internalTasks, nil
}
func generateWatchDeltaChannelInfo(info *datapb.VchannelInfo) (*datapb.VchannelInfo, error) {
deltaChannelName, err := funcutil.ConvertChannelName(info.ChannelName, Params.CommonCfg.RootCoordDml, Params.CommonCfg.RootCoordDelta)
if err != nil {
return nil, err
}
deltaChannel := proto.Clone(info).(*datapb.VchannelInfo)
deltaChannel.ChannelName = deltaChannelName
deltaChannel.UnflushedSegmentIds = nil
deltaChannel.FlushedSegmentIds = nil
deltaChannel.DroppedSegmentIds = nil
return deltaChannel, nil
}
func mergeWatchDeltaChannelInfo(infos []*datapb.VchannelInfo) []*datapb.VchannelInfo {
minPositions := make(map[string]int)
for index, info := range infos {
_, ok := minPositions[info.ChannelName]
if !ok {
minPositions[info.ChannelName] = index
}
minTimeStampIndex := minPositions[info.ChannelName]
if info.SeekPosition.GetTimestamp() < infos[minTimeStampIndex].SeekPosition.GetTimestamp() {
minPositions[info.ChannelName] = index
}
}
var result []*datapb.VchannelInfo
for channel, index := range minPositions {
result = append(result, infos[index])
log.Info("merge delta channels finished", zap.String("channel", channel),
zap.Any("merged info", infos[index]),
)
}
return result
}
func mergeDmChannelInfo(infos []*datapb.VchannelInfo) map[string]*datapb.VchannelInfo {
minPositions := make(map[string]*datapb.VchannelInfo)
for _, info := range infos {
if _, ok := minPositions[info.ChannelName]; !ok {
minPositions[info.ChannelName] = info
continue
}
minPositionInfo := minPositions[info.ChannelName]
if info.SeekPosition.GetTimestamp() < minPositionInfo.SeekPosition.GetTimestamp() {
minPositionInfo.SeekPosition = info.SeekPosition
}
minPositionInfo.DroppedSegmentIds = append(minPositionInfo.DroppedSegmentIds, info.DroppedSegmentIds...)
minPositionInfo.UnflushedSegmentIds = append(minPositionInfo.UnflushedSegmentIds, info.UnflushedSegmentIds...)
minPositionInfo.FlushedSegmentIds = append(minPositionInfo.FlushedSegmentIds, info.FlushedSegmentIds...)
}
return minPositions
}
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