mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-05 05:18:52 +08:00
131 lines
4.0 KiB
Go
131 lines
4.0 KiB
Go
// 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 observers
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
"time"
|
|
|
|
"go.uber.org/zap"
|
|
|
|
"github.com/milvus-io/milvus/internal/querycoordv2/meta"
|
|
"github.com/milvus-io/milvus/internal/querycoordv2/params"
|
|
"github.com/milvus-io/milvus/internal/querycoordv2/utils"
|
|
"github.com/milvus-io/milvus/pkg/log"
|
|
)
|
|
|
|
// check replica, find outbound nodes and remove it from replica if all segment/channel has been moved
|
|
type ReplicaObserver struct {
|
|
cancel context.CancelFunc
|
|
wg sync.WaitGroup
|
|
meta *meta.Meta
|
|
distMgr *meta.DistributionManager
|
|
|
|
stopOnce sync.Once
|
|
}
|
|
|
|
func NewReplicaObserver(meta *meta.Meta, distMgr *meta.DistributionManager) *ReplicaObserver {
|
|
return &ReplicaObserver{
|
|
meta: meta,
|
|
distMgr: distMgr,
|
|
}
|
|
}
|
|
|
|
func (ob *ReplicaObserver) Start() {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
ob.cancel = cancel
|
|
|
|
ob.wg.Add(1)
|
|
go ob.schedule(ctx)
|
|
}
|
|
|
|
func (ob *ReplicaObserver) Stop() {
|
|
ob.stopOnce.Do(func() {
|
|
if ob.cancel != nil {
|
|
ob.cancel()
|
|
}
|
|
ob.wg.Wait()
|
|
})
|
|
}
|
|
|
|
func (ob *ReplicaObserver) schedule(ctx context.Context) {
|
|
defer ob.wg.Done()
|
|
log.Info("Start check replica loop")
|
|
|
|
ticker := time.NewTicker(params.Params.QueryCoordCfg.CheckNodeInReplicaInterval.GetAsDuration(time.Second))
|
|
defer ticker.Stop()
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
log.Info("Close replica observer")
|
|
return
|
|
|
|
case <-ticker.C:
|
|
ob.checkNodesInReplica()
|
|
}
|
|
}
|
|
}
|
|
|
|
func (ob *ReplicaObserver) checkNodesInReplica() {
|
|
log := log.Ctx(context.Background()).WithRateGroup("qcv2.replicaObserver", 1, 60)
|
|
collections := ob.meta.GetAll()
|
|
for _, collectionID := range collections {
|
|
removedNodes := make([]int64, 0)
|
|
// remove nodes from replica which has been transferred to other rg
|
|
replicas := ob.meta.ReplicaManager.GetByCollection(collectionID)
|
|
for _, replica := range replicas {
|
|
outboundNodes := ob.meta.ResourceManager.CheckOutboundNodes(replica)
|
|
if len(outboundNodes) > 0 {
|
|
log.RatedInfo(10, "found outbound nodes in replica",
|
|
zap.Int64("collectionID", replica.GetCollectionID()),
|
|
zap.Int64("replicaID", replica.GetID()),
|
|
zap.Int64s("allOutboundNodes", outboundNodes.Collect()),
|
|
)
|
|
|
|
for node := range outboundNodes {
|
|
channels := ob.distMgr.ChannelDistManager.GetByCollectionAndNode(collectionID, node)
|
|
segments := ob.distMgr.SegmentDistManager.GetByCollectionAndNode(collectionID, node)
|
|
|
|
if len(channels) == 0 && len(segments) == 0 {
|
|
replica.RemoveNode(node)
|
|
removedNodes = append(removedNodes, node)
|
|
log.Info("all segment/channel has been removed from outbound node, remove it from replica",
|
|
zap.Int64("collectionID", replica.GetCollectionID()),
|
|
zap.Int64("replicaID", replica.GetID()),
|
|
zap.Int64("removedNodes", node),
|
|
zap.Int64s("availableNodes", replica.GetNodes()),
|
|
)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// assign removed nodes to other replicas in current rg
|
|
for _, node := range removedNodes {
|
|
rg, err := ob.meta.ResourceManager.FindResourceGroupByNode(node)
|
|
if err != nil {
|
|
// unreachable logic path
|
|
log.Warn("found node which does not belong to any resource group", zap.Int64("nodeID", node))
|
|
continue
|
|
}
|
|
replicas := ob.meta.ReplicaManager.GetByCollectionAndRG(collectionID, rg)
|
|
utils.AddNodesToReplicas(ob.meta, replicas, node)
|
|
}
|
|
}
|
|
}
|