mirror of https://github.com/milvus-io/milvus.git
77 lines
2.8 KiB
Go
77 lines
2.8 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 datanode
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import (
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"math"
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"sort"
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"time"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/util/hardware"
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"github.com/milvus-io/milvus/internal/util/tsoutil"
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"go.uber.org/zap"
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)
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// segmentsSyncPolicy sync policy applies to segments
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type segmentSyncPolicy func(segments []*Segment, ts Timestamp) []UniqueID
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// syncPeriodically get segmentSyncPolicy with segments sync periodically.
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func syncPeriodically() segmentSyncPolicy {
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return func(segments []*Segment, ts Timestamp) []UniqueID {
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segsToSync := make([]UniqueID, 0)
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for _, seg := range segments {
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endTime := tsoutil.PhysicalTime(ts)
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lastSyncTime := tsoutil.PhysicalTime(seg.lastSyncTs)
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shouldSync := endTime.Sub(lastSyncTime) >= Params.DataNodeCfg.SyncPeriod.GetAsDuration(time.Second) && !seg.isBufferEmpty()
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if shouldSync {
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segsToSync = append(segsToSync, seg.segmentID)
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}
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}
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if len(segsToSync) > 0 {
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log.Debug("sync segment periodically",
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zap.Int64s("segmentID", segsToSync))
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}
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return segsToSync
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}
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}
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// syncMemoryTooHigh force sync the largest segment.
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func syncMemoryTooHigh() segmentSyncPolicy {
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return func(segments []*Segment, ts Timestamp) []UniqueID {
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if Params.DataNodeCfg.MemoryForceSyncEnable.GetAsBool() &&
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hardware.GetMemoryUseRatio() >= Params.DataNodeCfg.MemoryForceSyncThreshold.GetAsFloat() &&
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len(segments) >= 1 {
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toSyncSegmentNum := int(math.Max(float64(len(segments))*Params.DataNodeCfg.MemoryForceSyncSegmentRatio.GetAsFloat(), 1.0))
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toSyncSegmentIDs := make([]UniqueID, 0)
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sort.Slice(segments, func(i, j int) bool {
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return segments[i].memorySize > segments[j].memorySize
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})
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for i := 0; i < toSyncSegmentNum; i++ {
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toSyncSegmentIDs = append(toSyncSegmentIDs, segments[i].segmentID)
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}
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log.Debug("sync segment due to memory usage is too high",
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zap.Int64s("toSyncSegmentIDs", toSyncSegmentIDs),
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zap.Int("inputSegmentNum", len(segments)),
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zap.Int("toSyncSegmentNum", len(toSyncSegmentIDs)),
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zap.Float64("memoryUsageRatio", hardware.GetMemoryUseRatio()))
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return toSyncSegmentIDs
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}
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return []UniqueID{}
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}
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}
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