mirror of
https://gitee.com/milvus-io/milvus.git
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358 lines
11 KiB
Go
358 lines
11 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 compaction
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import (
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"context"
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"fmt"
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sio "io"
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"math"
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"time"
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"github.com/cockroachdb/errors"
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"github.com/samber/lo"
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"go.opentelemetry.io/otel"
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"go.uber.org/zap"
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"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
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"github.com/milvus-io/milvus/internal/allocator"
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"github.com/milvus-io/milvus/internal/flushcommon/io"
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"github.com/milvus-io/milvus/internal/proto/datapb"
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"github.com/milvus-io/milvus/internal/storage"
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"github.com/milvus-io/milvus/pkg/log"
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"github.com/milvus-io/milvus/pkg/metrics"
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"github.com/milvus-io/milvus/pkg/util/funcutil"
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"github.com/milvus-io/milvus/pkg/util/paramtable"
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"github.com/milvus-io/milvus/pkg/util/timerecord"
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"github.com/milvus-io/milvus/pkg/util/tsoutil"
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"github.com/milvus-io/milvus/pkg/util/typeutil"
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)
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type mixCompactionTask struct {
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binlogIO io.BinlogIO
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currentTs typeutil.Timestamp
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plan *datapb.CompactionPlan
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ctx context.Context
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cancel context.CancelFunc
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collectionID int64
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partitionID int64
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targetSize int64
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maxRows int64
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pkID int64
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bm25FieldIDs []int64
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done chan struct{}
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tr *timerecord.TimeRecorder
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}
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var _ Compactor = (*mixCompactionTask)(nil)
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func NewMixCompactionTask(
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ctx context.Context,
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binlogIO io.BinlogIO,
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plan *datapb.CompactionPlan,
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) *mixCompactionTask {
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ctx1, cancel := context.WithCancel(ctx)
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return &mixCompactionTask{
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ctx: ctx1,
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cancel: cancel,
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binlogIO: binlogIO,
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plan: plan,
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tr: timerecord.NewTimeRecorder("mergeSplit compaction"),
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currentTs: tsoutil.GetCurrentTime(),
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done: make(chan struct{}, 1),
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}
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}
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// preCompact exams whether its a valid compaction plan, and init the collectionID and partitionID
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func (t *mixCompactionTask) preCompact() error {
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if ok := funcutil.CheckCtxValid(t.ctx); !ok {
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return t.ctx.Err()
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}
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if len(t.plan.GetSegmentBinlogs()) < 1 {
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return errors.Newf("compaction plan is illegal, there's no segments in compaction plan, planID = %d", t.GetPlanID())
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}
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if t.plan.GetMaxSize() == 0 {
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return errors.Newf("compaction plan is illegal, empty maxSize, planID = %d", t.GetPlanID())
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}
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t.collectionID = t.plan.GetSegmentBinlogs()[0].GetCollectionID()
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t.partitionID = t.plan.GetSegmentBinlogs()[0].GetPartitionID()
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t.targetSize = t.plan.GetMaxSize()
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t.bm25FieldIDs = GetBM25FieldIDs(t.plan.GetSchema())
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currSize := int64(0)
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for _, segmentBinlog := range t.plan.GetSegmentBinlogs() {
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for i, fieldBinlog := range segmentBinlog.GetFieldBinlogs() {
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for _, binlog := range fieldBinlog.GetBinlogs() {
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// numRows just need to add entries num of ONE field.
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if i == 0 {
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t.maxRows += binlog.GetEntriesNum()
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}
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// MemorySize might be incorrectly
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currSize += binlog.GetMemorySize()
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}
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}
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}
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outputSegmentCount := int64(math.Ceil(float64(currSize) / float64(t.targetSize)))
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log.Info("preCompaction analyze",
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zap.Int64("planID", t.GetPlanID()),
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zap.Int64("inputSize", currSize),
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zap.Int64("targetSize", t.targetSize),
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zap.Int("inputSegmentCount", len(t.plan.GetSegmentBinlogs())),
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zap.Int64("estimatedOutputSegmentCount", outputSegmentCount),
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)
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return nil
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}
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func (t *mixCompactionTask) mergeSplit(
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ctx context.Context,
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binlogPaths [][]string,
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delta map[interface{}]typeutil.Timestamp,
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) ([]*datapb.CompactionSegment, error) {
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_ = t.tr.RecordSpan()
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ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, "MergeSplit")
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defer span.End()
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log := log.With(zap.Int64("planID", t.GetPlanID()))
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segIDAlloc := allocator.NewLocalAllocator(t.plan.GetPreAllocatedSegmentIDs().GetBegin(), t.plan.GetPreAllocatedSegmentIDs().GetEnd())
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logIDAlloc := allocator.NewLocalAllocator(t.plan.GetBeginLogID(), math.MaxInt64)
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compAlloc := NewCompactionAllocator(segIDAlloc, logIDAlloc)
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mWriter := NewMultiSegmentWriter(t.binlogIO, compAlloc, t.plan, t.maxRows, t.partitionID, t.collectionID, t.bm25FieldIDs)
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deletedRowCount := int64(0)
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expiredRowCount := int64(0)
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pkField, err := typeutil.GetPrimaryFieldSchema(t.plan.GetSchema())
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if err != nil {
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log.Warn("failed to get pk field from schema")
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return nil, err
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}
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for _, paths := range binlogPaths {
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del, exp, err := t.writePaths(ctx, delta, mWriter, pkField, paths)
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if err != nil {
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return nil, err
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}
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deletedRowCount += del
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expiredRowCount += exp
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}
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res, err := mWriter.Finish()
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if err != nil {
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log.Warn("compact wrong, failed to finish writer", zap.Error(err))
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return nil, err
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}
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totalElapse := t.tr.RecordSpan()
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log.Info("compact mergeSplit end",
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zap.Int64s("mergeSplit to segments", lo.Keys(mWriter.cachedMeta)),
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zap.Int64("deleted row count", deletedRowCount),
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zap.Int64("expired entities", expiredRowCount),
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zap.Duration("total elapse", totalElapse))
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return res, nil
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}
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func isValueDeleted(v *storage.Value, delta map[interface{}]typeutil.Timestamp) bool {
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ts, ok := delta[v.PK.GetValue()]
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// insert task and delete task has the same ts when upsert
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// here should be < instead of <=
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// to avoid the upsert data to be deleted after compact
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if ok && uint64(v.Timestamp) < ts {
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return true
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}
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return false
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}
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func (t *mixCompactionTask) writePaths(ctx context.Context, delta map[interface{}]typeutil.Timestamp,
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mWriter *MultiSegmentWriter, pkField *schemapb.FieldSchema, paths []string,
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) (deletedRowCount, expiredRowCount int64, err error) {
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log := log.With(zap.Strings("paths", paths))
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allValues, err := t.binlogIO.Download(ctx, paths)
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if err != nil {
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log.Warn("compact wrong, fail to download insertLogs", zap.Error(err))
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return
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}
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blobs := lo.Map(allValues, func(v []byte, i int) *storage.Blob {
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return &storage.Blob{Key: paths[i], Value: v}
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})
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iter, err := storage.NewBinlogDeserializeReader(blobs, pkField.GetFieldID())
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if err != nil {
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log.Warn("compact wrong, failed to new insert binlogs reader", zap.Error(err))
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return
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}
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defer iter.Close()
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for {
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err = iter.Next()
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if err != nil {
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if err == sio.EOF {
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err = nil
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break
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} else {
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log.Warn("compact wrong, failed to iter through data", zap.Error(err))
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return
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}
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}
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v := iter.Value()
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if isValueDeleted(v, delta) {
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deletedRowCount++
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continue
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}
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// Filtering expired entity
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if isExpiredEntity(t.plan.GetCollectionTtl(), t.currentTs, typeutil.Timestamp(v.Timestamp)) {
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expiredRowCount++
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continue
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}
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err = mWriter.Write(v)
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if err != nil {
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log.Warn("compact wrong, failed to writer row", zap.Error(err))
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return
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}
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}
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return
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}
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func (t *mixCompactionTask) Compact() (*datapb.CompactionPlanResult, error) {
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durInQueue := t.tr.RecordSpan()
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ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(t.ctx, fmt.Sprintf("MixCompact-%d", t.GetPlanID()))
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defer span.End()
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compactStart := time.Now()
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if err := t.preCompact(); err != nil {
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log.Warn("compact wrong, failed to preCompact", zap.Error(err))
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return nil, err
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}
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log := log.Ctx(ctx).With(zap.Int64("planID", t.GetPlanID()),
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zap.Int64("collectionID", t.collectionID),
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zap.Int64("partitionID", t.partitionID),
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zap.Int32("timeout in seconds", t.plan.GetTimeoutInSeconds()))
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ctxTimeout, cancelAll := context.WithTimeout(ctx, time.Duration(t.plan.GetTimeoutInSeconds())*time.Second)
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defer cancelAll()
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log.Info("compact start")
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deltaPaths, allBatchPaths, err := composePaths(t.plan.GetSegmentBinlogs())
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if err != nil {
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log.Warn("compact wrong, failed to composePaths", zap.Error(err))
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return nil, err
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}
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// Unable to deal with all empty segments cases, so return error
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if len(allBatchPaths) == 0 {
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log.Warn("compact wrong, all segments' binlogs are empty")
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return nil, errors.New("illegal compaction plan")
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}
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deltaPk2Ts, err := mergeDeltalogs(ctxTimeout, t.binlogIO, deltaPaths)
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if err != nil {
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log.Warn("compact wrong, fail to merge deltalogs", zap.Error(err))
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return nil, err
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}
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allSorted := true
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for _, segment := range t.plan.GetSegmentBinlogs() {
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if !segment.GetIsSorted() {
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allSorted = false
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break
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}
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}
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var res []*datapb.CompactionSegment
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if allSorted && len(t.plan.GetSegmentBinlogs()) > 1 {
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log.Info("all segments are sorted, use merge sort")
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res, err = mergeSortMultipleSegments(ctxTimeout, t.plan, t.collectionID, t.partitionID, t.maxRows, t.binlogIO,
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t.plan.GetSegmentBinlogs(), deltaPk2Ts, t.tr, t.currentTs, t.plan.GetCollectionTtl(), t.bm25FieldIDs)
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if err != nil {
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log.Warn("compact wrong, fail to merge sort segments", zap.Error(err))
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return nil, err
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}
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} else {
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res, err = t.mergeSplit(ctxTimeout, allBatchPaths, deltaPk2Ts)
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if err != nil {
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log.Warn("compact wrong, failed to mergeSplit", zap.Error(err))
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return nil, err
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}
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}
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log.Info("compact done", zap.Duration("compact elapse", time.Since(compactStart)))
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metrics.DataNodeCompactionLatency.WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), t.plan.GetType().String()).Observe(float64(t.tr.ElapseSpan().Milliseconds()))
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metrics.DataNodeCompactionLatencyInQueue.WithLabelValues(fmt.Sprint(paramtable.GetNodeID())).Observe(float64(durInQueue.Milliseconds()))
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planResult := &datapb.CompactionPlanResult{
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State: datapb.CompactionTaskState_completed,
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PlanID: t.GetPlanID(),
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Channel: t.GetChannelName(),
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Segments: res,
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Type: t.plan.GetType(),
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}
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return planResult, nil
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}
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func (t *mixCompactionTask) Complete() {
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t.done <- struct{}{}
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}
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func (t *mixCompactionTask) Stop() {
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t.cancel()
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<-t.done
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}
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func (t *mixCompactionTask) GetPlanID() typeutil.UniqueID {
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return t.plan.GetPlanID()
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}
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func (t *mixCompactionTask) GetChannelName() string {
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return t.plan.GetChannel()
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}
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func (t *mixCompactionTask) GetCompactionType() datapb.CompactionType {
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return t.plan.GetType()
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}
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func (t *mixCompactionTask) GetCollection() typeutil.UniqueID {
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return t.plan.GetSegmentBinlogs()[0].GetCollectionID()
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}
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func (t *mixCompactionTask) GetSlotUsage() int64 {
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return t.plan.GetSlotUsage()
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}
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func GetBM25FieldIDs(coll *schemapb.CollectionSchema) []int64 {
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return lo.FilterMap(coll.GetFunctions(), func(function *schemapb.FunctionSchema, _ int) (int64, bool) {
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if function.GetType() == schemapb.FunctionType_BM25 {
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return function.GetOutputFieldIds()[0], true
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}
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return 0, false
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})
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}
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