mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-03 04:19:18 +08:00
278 lines
8.2 KiB
Go
278 lines
8.2 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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"sync"
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"time"
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"github.com/golang/protobuf/proto"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
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"github.com/milvus-io/milvus-proto/go-api/v2/msgpb"
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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/pkg/log"
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"github.com/milvus-io/milvus/pkg/util/commonpbutil"
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"github.com/milvus-io/milvus/pkg/util/merr"
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)
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const (
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distReqTimeout = 3 * time.Second
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heartBeatLagBehindWarn = 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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log := log.Ctx(ctx).With(zap.Int64("nodeID", dh.nodeID)).WithRateGroup("qcv2.distHandler", 1, 60)
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log.Info("start dist handler")
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ticker := time.NewTicker(Params.QueryCoordCfg.DistPullInterval.GetAsDuration(time.Millisecond))
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defer ticker.Stop()
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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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log.Info("close dist handler due to context done")
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return
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case <-dh.c:
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log.Info("close dist handler")
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return
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case <-ticker.C:
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resp, err := dh.getDistribution(ctx)
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if err != nil {
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node := dh.nodeManager.Get(dh.nodeID)
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fields := []zap.Field{zap.Int("times", failures)}
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if node != nil {
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fields = append(fields, zap.Time("lastHeartbeat", node.LastHeartbeat()))
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}
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fields = append(fields, zap.Error(err))
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log.RatedWarn(30.0, "failed to get data distribution", fields...)
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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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}
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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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if time.Since(node.LastHeartbeat()) > heartBeatLagBehindWarn {
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log.Warn("node last heart beat time lag too behind", zap.Time("now", time.Now()),
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zap.Time("lastHeartBeatTime", node.LastHeartbeat()), zap.Int64("nodeID", node.ID()))
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}
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node.SetLastHeartbeat(time.Now())
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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.GetSealedSegment(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.GetSealedSegment(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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LastDeltaTimestamp: s.GetLastDeltaTimestamp(),
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IndexInfo: s.GetIndexInfo(),
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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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LastDeltaTimestamp: s.GetLastDeltaTimestamp(),
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IndexInfo: s.GetIndexInfo(),
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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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var version int64
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for _, channel := range resp.GetChannels() {
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if channel.GetChannel() == lview.GetChannel() {
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version = channel.GetVersion()
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break
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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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Version: version,
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Segments: lview.GetSegmentDist(),
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GrowingSegments: segments,
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TargetVersion: lview.TargetVersion,
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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) (*querypb.GetDataDistributionResponse, error) {
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dh.mu.Lock()
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defer dh.mu.Unlock()
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channels := make(map[string]*msgpb.MsgPosition)
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for _, channel := range dh.dist.ChannelDistManager.GetByNode(dh.nodeID) {
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targetChannel := dh.target.GetDmChannel(channel.GetCollectionID(), channel.GetChannelName(), meta.CurrentTarget)
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if targetChannel == nil {
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continue
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}
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channels[channel.GetChannelName()] = targetChannel.GetSeekPosition()
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}
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ctx, cancel := context.WithTimeout(ctx, distReqTimeout)
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defer cancel()
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resp, err := dh.client.GetDataDistribution(ctx, 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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Checkpoints: channels,
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})
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if err != nil {
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return nil, err
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}
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if !merr.Ok(resp.GetStatus()) {
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return nil, merr.Error(resp.GetStatus())
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}
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return resp, nil
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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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// clear dist
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dh.dist.ChannelDistManager.Update(dh.nodeID)
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dh.dist.SegmentDistManager.Update(dh.nodeID)
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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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