mirror of
https://gitee.com/milvus-io/milvus.git
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261 lines
7.5 KiB
Go
261 lines
7.5 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package dist
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import (
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"context"
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"fmt"
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"sync"
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"time"
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"github.com/golang/protobuf/proto"
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"github.com/milvus-io/milvus-proto/go-api/commonpb"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/datapb"
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"github.com/milvus-io/milvus/internal/proto/querypb"
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"github.com/milvus-io/milvus/internal/querycoordv2/meta"
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. "github.com/milvus-io/milvus/internal/querycoordv2/params"
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"github.com/milvus-io/milvus/internal/querycoordv2/session"
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"github.com/milvus-io/milvus/internal/querycoordv2/task"
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"github.com/milvus-io/milvus/internal/util/commonpbutil"
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"go.uber.org/zap"
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)
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const (
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distReqTimeout = 3 * time.Second
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maxFailureTimes = 3
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)
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type distHandler struct {
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nodeID int64
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c chan struct{}
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wg sync.WaitGroup
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client session.Cluster
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nodeManager *session.NodeManager
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scheduler task.Scheduler
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dist *meta.DistributionManager
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target *meta.TargetManager
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mu sync.Mutex
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stopOnce sync.Once
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}
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func (dh *distHandler) start(ctx context.Context) {
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defer dh.wg.Done()
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logger := log.With(zap.Int64("nodeID", dh.nodeID))
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logger.Info("start dist handler")
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ticker := time.NewTicker(Params.QueryCoordCfg.DistPullInterval)
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id := int64(1)
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failures := 0
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for {
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select {
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case <-ctx.Done():
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logger.Info("close dist handler due to context done")
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return
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case <-dh.c:
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logger.Info("close dist handelr")
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return
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case <-ticker.C:
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dh.mu.Lock()
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cctx, cancel := context.WithTimeout(ctx, distReqTimeout)
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resp, err := dh.client.GetDataDistribution(cctx, dh.nodeID, &querypb.GetDataDistributionRequest{
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Base: commonpbutil.NewMsgBase(
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commonpbutil.WithMsgType(commonpb.MsgType_GetDistribution),
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),
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})
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cancel()
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if err != nil || resp.GetStatus().GetErrorCode() != commonpb.ErrorCode_Success {
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failures++
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dh.logFailureInfo(resp, err)
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} else {
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failures = 0
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dh.handleDistResp(resp)
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}
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if failures >= maxFailureTimes {
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log.RatedInfo(30.0, fmt.Sprintf("can not get data distribution from node %d for %d times", dh.nodeID, failures))
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// TODO: kill the querynode server and stop the loop?
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}
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id++
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dh.mu.Unlock()
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}
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}
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}
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func (dh *distHandler) logFailureInfo(resp *querypb.GetDataDistributionResponse, err error) {
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log.With(zap.Int64("nodeID", dh.nodeID))
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if err != nil {
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log.Warn("failed to get data distribution",
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zap.Error(err))
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} else if resp.GetStatus().GetErrorCode() != commonpb.ErrorCode_Success {
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log.Warn("failed to get data distribution",
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zap.Any("errorCode", resp.GetStatus().GetErrorCode()),
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zap.Any("reason", resp.GetStatus().GetReason()))
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}
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}
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func (dh *distHandler) handleDistResp(resp *querypb.GetDataDistributionResponse) {
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node := dh.nodeManager.Get(resp.GetNodeID())
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if node != nil {
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node.UpdateStats(
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session.WithSegmentCnt(len(resp.GetSegments())),
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session.WithChannelCnt(len(resp.GetChannels())),
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)
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}
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dh.updateSegmentsDistribution(resp)
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dh.updateChannelsDistribution(resp)
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dh.updateLeaderView(resp)
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dh.scheduler.Dispatch(dh.nodeID)
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}
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func (dh *distHandler) updateSegmentsDistribution(resp *querypb.GetDataDistributionResponse) {
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updates := make([]*meta.Segment, 0, len(resp.GetSegments()))
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for _, s := range resp.GetSegments() {
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// for collection which is already loaded
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segmentInfo := dh.target.GetHistoricalSegment(s.GetCollection(), s.GetID(), meta.CurrentTarget)
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if segmentInfo == nil {
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// for collection which is loading
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segmentInfo = dh.target.GetHistoricalSegment(s.GetCollection(), s.GetID(), meta.NextTarget)
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}
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var segment *meta.Segment
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if segmentInfo == nil {
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segment = &meta.Segment{
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SegmentInfo: &datapb.SegmentInfo{
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ID: s.GetID(),
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CollectionID: s.GetCollection(),
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PartitionID: s.GetPartition(),
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InsertChannel: s.GetChannel(),
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},
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Node: resp.GetNodeID(),
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Version: s.GetVersion(),
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}
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} else {
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segment = &meta.Segment{
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SegmentInfo: proto.Clone(segmentInfo).(*datapb.SegmentInfo),
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Node: resp.GetNodeID(),
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Version: s.GetVersion(),
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}
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}
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updates = append(updates, segment)
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}
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dh.dist.SegmentDistManager.Update(resp.GetNodeID(), updates...)
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}
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func (dh *distHandler) updateChannelsDistribution(resp *querypb.GetDataDistributionResponse) {
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updates := make([]*meta.DmChannel, 0, len(resp.GetChannels()))
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for _, ch := range resp.GetChannels() {
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channelInfo := dh.target.GetDmChannel(ch.GetCollection(), ch.GetChannel(), meta.CurrentTarget)
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var channel *meta.DmChannel
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if channelInfo == nil {
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channel = &meta.DmChannel{
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VchannelInfo: &datapb.VchannelInfo{
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ChannelName: ch.GetChannel(),
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CollectionID: ch.GetCollection(),
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},
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Node: resp.GetNodeID(),
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Version: ch.GetVersion(),
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}
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} else {
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channel = channelInfo.Clone()
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}
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updates = append(updates, channel)
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}
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dh.dist.ChannelDistManager.Update(resp.GetNodeID(), updates...)
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}
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func (dh *distHandler) updateLeaderView(resp *querypb.GetDataDistributionResponse) {
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updates := make([]*meta.LeaderView, 0, len(resp.GetLeaderViews()))
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for _, lview := range resp.GetLeaderViews() {
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segments := make(map[int64]*meta.Segment)
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for ID, position := range lview.GrowingSegments {
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segments[ID] = &meta.Segment{
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SegmentInfo: &datapb.SegmentInfo{
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ID: ID,
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CollectionID: lview.GetCollection(),
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StartPosition: position,
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InsertChannel: lview.GetChannel(),
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},
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Node: resp.NodeID,
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}
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}
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view := &meta.LeaderView{
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ID: resp.GetNodeID(),
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CollectionID: lview.GetCollection(),
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Channel: lview.GetChannel(),
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Segments: lview.GetSegmentDist(),
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GrowingSegments: segments,
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}
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updates = append(updates, view)
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}
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dh.dist.LeaderViewManager.Update(resp.GetNodeID(), updates...)
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}
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func (dh *distHandler) getDistribution(ctx context.Context) {
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dh.mu.Lock()
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defer dh.mu.Unlock()
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cctx, cancel := context.WithTimeout(ctx, distReqTimeout)
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resp, err := dh.client.GetDataDistribution(cctx, dh.nodeID, &querypb.GetDataDistributionRequest{
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Base: commonpbutil.NewMsgBase(
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commonpbutil.WithMsgType(commonpb.MsgType_GetDistribution),
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),
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})
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cancel()
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if err != nil || resp.GetStatus().GetErrorCode() != commonpb.ErrorCode_Success {
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dh.logFailureInfo(resp, err)
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} else {
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dh.handleDistResp(resp)
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}
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}
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func (dh *distHandler) stop() {
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dh.stopOnce.Do(func() {
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close(dh.c)
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dh.wg.Wait()
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})
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}
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func newDistHandler(
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ctx context.Context,
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nodeID int64,
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client session.Cluster,
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nodeManager *session.NodeManager,
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scheduler task.Scheduler,
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dist *meta.DistributionManager,
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targetMgr *meta.TargetManager,
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) *distHandler {
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h := &distHandler{
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nodeID: nodeID,
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c: make(chan struct{}),
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client: client,
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nodeManager: nodeManager,
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scheduler: scheduler,
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dist: dist,
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target: targetMgr,
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}
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h.wg.Add(1)
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go h.start(ctx)
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return h
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}
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