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https://gitee.com/milvus-io/milvus.git
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a7f6193bfc
issue: #33103 when try to do stopping balance for stopping query node, balancer will try to get node list from replica.GetNodes, then check whether node is stopping, if so, stopping balance will be triggered for this replica. after the replica refactor, replica.GetNodes only return rwNodes, and the stopping node maintains in roNodes, so balancer couldn't find replica which contains stopping node, and stopping balance for replica won't be triggered, then query node will stuck forever due to segment/channel doesn't move out. --------- Signed-off-by: Wei Liu <wei.liu@zilliz.com>
123 lines
3.6 KiB
Go
123 lines
3.6 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/pkg/log"
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"github.com/milvus-io/milvus/pkg/util/syncutil"
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)
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// ResourceObserver is used to observe resource group status.
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// Recover resource group into expected configuration.
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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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listener := ob.meta.ResourceManager.ListenResourceGroupChanged()
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for {
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ob.waitRGChangedOrTimeout(ctx, listener)
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// stop if the context is canceled.
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if ctx.Err() != nil {
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log.Info("Close resource group observer")
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return
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}
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// do check once.
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ob.checkAndRecoverResourceGroup()
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}
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}
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func (ob *ResourceObserver) waitRGChangedOrTimeout(ctx context.Context, listener *syncutil.VersionedListener) {
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ctxWithTimeout, cancel := context.WithTimeout(ctx, params.Params.QueryCoordCfg.CheckResourceGroupInterval.GetAsDuration(time.Second))
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defer cancel()
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listener.Wait(ctxWithTimeout)
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}
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func (ob *ResourceObserver) checkAndRecoverResourceGroup() {
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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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log.Debug("start to check resource group", zap.Bool("enableRGAutoRecover", enableRGAutoRecover), zap.Int("resourceGroupNum", len(rgNames)))
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// Check if there is any incoming node.
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if manager.CheckIncomingNodeNum() > 0 {
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log.Info("new incoming node is ready to be assigned...", zap.Int("incomingNodeNum", manager.CheckIncomingNodeNum()))
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manager.AssignPendingIncomingNode()
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}
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log.Debug("recover resource groups...")
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// Recover all resource group into expected configuration.
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for _, rgName := range rgNames {
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if err := manager.MeetRequirement(rgName); err != nil {
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log.Info("found resource group need to be recovered",
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zap.String("rgName", rgName),
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zap.String("reason", err.Error()),
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)
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if enableRGAutoRecover {
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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.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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log.Debug("check resource group done", zap.Bool("enableRGAutoRecover", enableRGAutoRecover), zap.Int("resourceGroupNum", len(rgNames)))
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}
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