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https://gitee.com/milvus-io/milvus.git
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a2502bde75
issue: #30647 - ReplicaManager manage read only node now, and always do persistent of node distribution of replica. - All segment/channel checker using ReplicaManager to get read-only node or read-write node, but not ResourceManager. - ReplicaManager promise that only apply unique querynode to one replica in same collection now (replicas in same collection never hold same querynode at same time). - ReplicaManager promise that fairly node count assignment policy if multi replicas of collection is assigned to one resource group. - Move some parameters check into ReplicaManager to avoid data race. - Allow transfer replica to resource group that already load replica of same collection - Allow transfer node between resource groups that load replica of same collection --------- Signed-off-by: chyezh <chyezh@outlook.com>
115 lines
2.9 KiB
Go
115 lines
2.9 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 observers
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import (
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"context"
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"sync"
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"time"
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"go.uber.org/zap"
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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/utils"
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"github.com/milvus-io/milvus/pkg/log"
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)
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// check whether rg lack of node, try to transfer node from default rg
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type ResourceObserver struct {
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cancel context.CancelFunc
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wg sync.WaitGroup
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meta *meta.Meta
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stopOnce sync.Once
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}
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func NewResourceObserver(meta *meta.Meta) *ResourceObserver {
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return &ResourceObserver{
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meta: meta,
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}
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}
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func (ob *ResourceObserver) Start() {
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ctx, cancel := context.WithCancel(context.Background())
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ob.cancel = cancel
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ob.wg.Add(1)
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go ob.schedule(ctx)
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}
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func (ob *ResourceObserver) Stop() {
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ob.stopOnce.Do(func() {
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if ob.cancel != nil {
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ob.cancel()
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}
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ob.wg.Wait()
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})
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}
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func (ob *ResourceObserver) schedule(ctx context.Context) {
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defer ob.wg.Done()
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log.Info("Start check resource group loop")
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ticker := time.NewTicker(params.Params.QueryCoordCfg.CheckResourceGroupInterval.GetAsDuration(time.Second))
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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log.Info("Close resource group observer")
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return
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case <-ticker.C:
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ob.checkResourceGroup()
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}
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}
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}
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func (ob *ResourceObserver) checkResourceGroup() {
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manager := ob.meta.ResourceManager
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rgNames := manager.ListResourceGroups()
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enableRGAutoRecover := params.Params.QueryCoordCfg.EnableRGAutoRecover.GetAsBool()
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for _, rgName := range rgNames {
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if rgName == meta.DefaultResourceGroupName {
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continue
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}
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lackNodeNum := manager.CheckLackOfNode(rgName)
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if lackNodeNum > 0 {
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log.Info("found resource group lack of nodes",
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zap.String("rgName", rgName),
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zap.Int("lackNodeNum", lackNodeNum),
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)
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if enableRGAutoRecover {
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nodes, err := manager.AutoRecoverResourceGroup(rgName)
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if err != nil {
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log.Warn("failed to recover resource group",
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zap.String("rgName", rgName),
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zap.Int("lackNodeNum", lackNodeNum-len(nodes)),
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zap.Error(err),
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)
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}
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}
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}
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}
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if enableRGAutoRecover {
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utils.RecoverAllCollection(ob.meta)
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}
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}
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