mirror of
https://gitee.com/milvus-io/milvus.git
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1185 lines
39 KiB
Go
1185 lines
39 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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"path"
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"sort"
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"strconv"
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"strings"
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"sync"
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"time"
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"github.com/cockroachdb/errors"
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"github.com/golang/protobuf/proto"
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"github.com/samber/lo"
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"go.opentelemetry.io/otel"
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"go.uber.org/atomic"
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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/datanode/io"
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"github.com/milvus-io/milvus/internal/proto/clusteringpb"
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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/common"
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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/conc"
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"github.com/milvus-io/milvus/pkg/util/funcutil"
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"github.com/milvus-io/milvus/pkg/util/hardware"
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"github.com/milvus-io/milvus/pkg/util/lock"
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"github.com/milvus-io/milvus/pkg/util/merr"
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"github.com/milvus-io/milvus/pkg/util/metautil"
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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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var _ Compactor = (*clusteringCompactionTask)(nil)
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type clusteringCompactionTask struct {
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binlogIO io.BinlogIO
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logIDAlloc allocator.Interface
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segIDAlloc allocator.Interface
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ctx context.Context
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cancel context.CancelFunc
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done chan struct{}
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tr *timerecord.TimeRecorder
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mappingPool *conc.Pool[any]
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flushPool *conc.Pool[any]
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plan *datapb.CompactionPlan
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// flush
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flushMutex sync.Mutex
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flushCount *atomic.Int64
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flushChan chan FlushSignal
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doneChan chan struct{}
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// metrics, don't use
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writtenRowNum *atomic.Int64
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hasSignal *atomic.Bool
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// inner field
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collectionID int64
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partitionID int64
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currentTs typeutil.Timestamp // for TTL
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isVectorClusteringKey bool
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clusteringKeyField *schemapb.FieldSchema
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primaryKeyField *schemapb.FieldSchema
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memoryBufferSize int64
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clusterBuffers []*ClusterBuffer
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clusterBufferLocks *lock.KeyLock[int]
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// scalar
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keyToBufferFunc func(interface{}) *ClusterBuffer
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// vector
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segmentIDOffsetMapping map[int64]string
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offsetToBufferFunc func(int64, []uint32) *ClusterBuffer
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}
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type ClusterBuffer struct {
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id int
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writer *SegmentWriter
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flushLock lock.RWMutex
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bufferMemorySize atomic.Int64
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flushedRowNum map[typeutil.UniqueID]atomic.Int64
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currentSegmentRowNum atomic.Int64
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// segID -> fieldID -> binlogs
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flushedBinlogs map[typeutil.UniqueID]map[typeutil.UniqueID]*datapb.FieldBinlog
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uploadedSegments []*datapb.CompactionSegment
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uploadedSegmentStats map[typeutil.UniqueID]storage.SegmentStats
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clusteringKeyFieldStats *storage.FieldStats
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}
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type FlushSignal struct {
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writer *SegmentWriter
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pack bool
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id int
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done bool
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}
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func NewClusteringCompactionTask(
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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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) *clusteringCompactionTask {
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ctx, cancel := context.WithCancel(ctx)
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return &clusteringCompactionTask{
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ctx: ctx,
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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("clustering_compaction"),
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done: make(chan struct{}, 1),
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flushChan: make(chan FlushSignal, 100),
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doneChan: make(chan struct{}),
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clusterBuffers: make([]*ClusterBuffer, 0),
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clusterBufferLocks: lock.NewKeyLock[int](),
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flushCount: atomic.NewInt64(0),
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writtenRowNum: atomic.NewInt64(0),
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hasSignal: atomic.NewBool(false),
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}
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}
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func (t *clusteringCompactionTask) Complete() {
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t.done <- struct{}{}
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}
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func (t *clusteringCompactionTask) Stop() {
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t.cancel()
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<-t.done
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}
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func (t *clusteringCompactionTask) GetPlanID() typeutil.UniqueID {
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return t.plan.GetPlanID()
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}
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func (t *clusteringCompactionTask) GetChannelName() string {
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return t.plan.GetChannel()
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}
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func (t *clusteringCompactionTask) GetCompactionType() datapb.CompactionType {
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return t.plan.GetType()
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}
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func (t *clusteringCompactionTask) GetCollection() int64 {
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return t.plan.GetSegmentBinlogs()[0].GetCollectionID()
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}
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func (t *clusteringCompactionTask) init() error {
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if t.plan.GetType() != datapb.CompactionType_ClusteringCompaction {
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return merr.WrapErrIllegalCompactionPlan("illegal compaction type")
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}
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if len(t.plan.GetSegmentBinlogs()) == 0 {
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return merr.WrapErrIllegalCompactionPlan("empty segment binlogs")
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}
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t.collectionID = t.GetCollection()
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t.partitionID = t.plan.GetSegmentBinlogs()[0].GetPartitionID()
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logIDAlloc := allocator.NewLocalAllocator(t.plan.GetBeginLogID(), math.MaxInt64)
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segIDAlloc := allocator.NewLocalAllocator(t.plan.GetPreAllocatedSegments().GetBegin(), t.plan.GetPreAllocatedSegments().GetEnd())
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t.logIDAlloc = logIDAlloc
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t.segIDAlloc = segIDAlloc
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var pkField *schemapb.FieldSchema
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if t.plan.Schema == nil {
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return merr.WrapErrIllegalCompactionPlan("empty schema in compactionPlan")
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}
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for _, field := range t.plan.Schema.Fields {
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if field.GetIsPrimaryKey() && field.GetFieldID() >= 100 && typeutil.IsPrimaryFieldType(field.GetDataType()) {
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pkField = field
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}
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if field.GetFieldID() == t.plan.GetClusteringKeyField() {
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t.clusteringKeyField = field
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}
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}
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t.primaryKeyField = pkField
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t.isVectorClusteringKey = typeutil.IsVectorType(t.clusteringKeyField.DataType)
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t.currentTs = tsoutil.GetCurrentTime()
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t.memoryBufferSize = t.getMemoryBufferSize()
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workerPoolSize := t.getWorkerPoolSize()
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t.mappingPool = conc.NewPool[any](workerPoolSize)
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t.flushPool = conc.NewPool[any](workerPoolSize)
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log.Info("clustering compaction task initialed", zap.Int64("memory_buffer_size", t.memoryBufferSize), zap.Int("worker_pool_size", workerPoolSize))
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return nil
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}
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func (t *clusteringCompactionTask) Compact() (*datapb.CompactionPlanResult, error) {
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ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(t.ctx, fmt.Sprintf("clusteringCompaction-%d", t.GetPlanID()))
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defer span.End()
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log := log.With(zap.Int64("planID", t.plan.GetPlanID()), zap.String("type", t.plan.GetType().String()))
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// 0, verify and init
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err := t.init()
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if err != nil {
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log.Error("compaction task init failed", zap.Error(err))
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return nil, err
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}
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if !funcutil.CheckCtxValid(ctx) {
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log.Warn("compact wrong, task context done or timeout")
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return nil, ctx.Err()
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}
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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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defer t.cleanUp(ctx)
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// 1, download delta logs to build deltaMap
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deltaBlobs, _, err := loadDeltaMap(t.plan.GetSegmentBinlogs())
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if err != nil {
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return nil, err
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}
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deltaPk2Ts, err := mergeDeltalogs(ctxTimeout, t.binlogIO, deltaBlobs)
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if err != nil {
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return nil, err
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}
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// 2, get analyze result
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if t.isVectorClusteringKey {
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if err := t.getVectorAnalyzeResult(ctx); err != nil {
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return nil, err
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}
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} else {
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if err := t.getScalarAnalyzeResult(ctx); err != nil {
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return nil, err
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}
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}
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// 3, mapping
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log.Info("Clustering compaction start mapping", zap.Int("bufferNum", len(t.clusterBuffers)))
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uploadSegments, partitionStats, err := t.mapping(ctx, deltaPk2Ts)
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if err != nil {
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return nil, err
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}
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// 4, collect partition stats
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err = t.uploadPartitionStats(ctx, t.collectionID, t.partitionID, partitionStats)
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if err != nil {
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return nil, err
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}
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// 5, assemble CompactionPlanResult
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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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Segments: uploadSegments,
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Type: t.plan.GetType(),
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Channel: t.plan.GetChannel(),
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}
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metrics.DataNodeCompactionLatency.
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WithLabelValues(fmt.Sprint(paramtable.GetNodeID()), t.plan.GetType().String()).
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Observe(float64(t.tr.ElapseSpan().Milliseconds()))
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log.Info("Clustering compaction finished", zap.Duration("elapse", t.tr.ElapseSpan()), zap.Int64("flushTimes", t.flushCount.Load()))
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return planResult, nil
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}
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func (t *clusteringCompactionTask) getScalarAnalyzeResult(ctx context.Context) error {
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ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, fmt.Sprintf("getScalarAnalyzeResult-%d", t.GetPlanID()))
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defer span.End()
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analyzeDict, err := t.scalarAnalyze(ctx)
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if err != nil {
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return err
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}
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plan := t.scalarPlan(analyzeDict)
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scalarToClusterBufferMap := make(map[interface{}]*ClusterBuffer, 0)
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for id, bucket := range plan {
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fieldStats, err := storage.NewFieldStats(t.clusteringKeyField.FieldID, t.clusteringKeyField.DataType, 0)
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if err != nil {
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return err
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}
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for _, key := range bucket {
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fieldStats.UpdateMinMax(storage.NewScalarFieldValue(t.clusteringKeyField.DataType, key))
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}
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buffer := &ClusterBuffer{
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id: id,
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flushedRowNum: map[typeutil.UniqueID]atomic.Int64{},
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flushedBinlogs: make(map[typeutil.UniqueID]map[typeutil.UniqueID]*datapb.FieldBinlog, 0),
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uploadedSegments: make([]*datapb.CompactionSegment, 0),
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uploadedSegmentStats: make(map[typeutil.UniqueID]storage.SegmentStats, 0),
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clusteringKeyFieldStats: fieldStats,
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}
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if _, err = t.refreshBufferWriter(buffer); err != nil {
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return err
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}
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t.clusterBuffers = append(t.clusterBuffers, buffer)
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for _, key := range bucket {
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scalarToClusterBufferMap[key] = buffer
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}
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}
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t.keyToBufferFunc = func(key interface{}) *ClusterBuffer {
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// todo: if keys are too many, the map will be quite large, we should mark the range of each buffer and select buffer by range
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return scalarToClusterBufferMap[key]
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}
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return nil
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}
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func (t *clusteringCompactionTask) getVectorAnalyzeResult(ctx context.Context) error {
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ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, fmt.Sprintf("getVectorAnalyzeResult-%d", t.GetPlanID()))
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defer span.End()
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analyzeResultPath := t.plan.AnalyzeResultPath
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centroidFilePath := path.Join(analyzeResultPath, metautil.JoinIDPath(t.collectionID, t.partitionID, t.clusteringKeyField.FieldID), common.Centroids)
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offsetMappingFiles := make(map[int64]string, 0)
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for _, segmentID := range t.plan.AnalyzeSegmentIds {
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path := path.Join(analyzeResultPath, metautil.JoinIDPath(t.collectionID, t.partitionID, t.clusteringKeyField.FieldID, segmentID), common.OffsetMapping)
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offsetMappingFiles[segmentID] = path
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log.Debug("read segment offset mapping file", zap.Int64("segmentID", segmentID), zap.String("path", path))
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}
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t.segmentIDOffsetMapping = offsetMappingFiles
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centroidBytes, err := t.binlogIO.Download(ctx, []string{centroidFilePath})
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if err != nil {
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return err
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}
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centroids := &clusteringpb.ClusteringCentroidsStats{}
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err = proto.Unmarshal(centroidBytes[0], centroids)
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if err != nil {
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return err
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}
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log.Debug("read clustering centroids stats", zap.String("path", centroidFilePath),
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zap.Int("centroidNum", len(centroids.GetCentroids())),
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zap.Any("offsetMappingFiles", t.segmentIDOffsetMapping))
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for id, centroid := range centroids.GetCentroids() {
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fieldStats, err := storage.NewFieldStats(t.clusteringKeyField.FieldID, t.clusteringKeyField.DataType, 0)
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if err != nil {
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return err
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}
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fieldStats.SetVectorCentroids(storage.NewVectorFieldValue(t.clusteringKeyField.DataType, centroid))
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clusterBuffer := &ClusterBuffer{
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id: id,
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flushedRowNum: map[typeutil.UniqueID]atomic.Int64{},
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flushedBinlogs: make(map[typeutil.UniqueID]map[typeutil.UniqueID]*datapb.FieldBinlog, 0),
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uploadedSegments: make([]*datapb.CompactionSegment, 0),
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uploadedSegmentStats: make(map[typeutil.UniqueID]storage.SegmentStats, 0),
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clusteringKeyFieldStats: fieldStats,
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}
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if _, err = t.refreshBufferWriter(clusterBuffer); err != nil {
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return err
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}
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t.clusterBuffers = append(t.clusterBuffers, clusterBuffer)
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}
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t.offsetToBufferFunc = func(offset int64, idMapping []uint32) *ClusterBuffer {
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return t.clusterBuffers[idMapping[offset]]
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}
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return nil
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}
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// mapping read and split input segments into buffers
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func (t *clusteringCompactionTask) mapping(ctx context.Context,
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deltaPk2Ts map[interface{}]typeutil.Timestamp,
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) ([]*datapb.CompactionSegment, *storage.PartitionStatsSnapshot, error) {
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ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, fmt.Sprintf("mapping-%d", t.GetPlanID()))
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defer span.End()
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inputSegments := t.plan.GetSegmentBinlogs()
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mapStart := time.Now()
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// start flush goroutine
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go t.backgroundFlush(ctx)
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futures := make([]*conc.Future[any], 0, len(inputSegments))
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for _, segment := range inputSegments {
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segmentClone := &datapb.CompactionSegmentBinlogs{
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SegmentID: segment.SegmentID,
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// only FieldBinlogs needed
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FieldBinlogs: segment.FieldBinlogs,
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}
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future := t.mappingPool.Submit(func() (any, error) {
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err := t.mappingSegment(ctx, segmentClone, deltaPk2Ts)
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return struct{}{}, err
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})
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futures = append(futures, future)
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}
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if err := conc.AwaitAll(futures...); err != nil {
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return nil, nil, err
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}
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t.flushChan <- FlushSignal{
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done: true,
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}
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// block util all writer flushed.
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<-t.doneChan
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// force flush all buffers
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err := t.flushAll(ctx)
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if err != nil {
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return nil, nil, err
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}
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resultSegments := make([]*datapb.CompactionSegment, 0)
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resultPartitionStats := &storage.PartitionStatsSnapshot{
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SegmentStats: make(map[typeutil.UniqueID]storage.SegmentStats),
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}
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for _, buffer := range t.clusterBuffers {
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for _, seg := range buffer.uploadedSegments {
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se := &datapb.CompactionSegment{
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PlanID: seg.GetPlanID(),
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SegmentID: seg.GetSegmentID(),
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NumOfRows: seg.GetNumOfRows(),
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InsertLogs: seg.GetInsertLogs(),
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Field2StatslogPaths: seg.GetField2StatslogPaths(),
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Deltalogs: seg.GetDeltalogs(),
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Channel: seg.GetChannel(),
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}
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log.Debug("put segment into final compaction result", zap.String("segment", se.String()))
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resultSegments = append(resultSegments, se)
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}
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for segID, segmentStat := range buffer.uploadedSegmentStats {
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log.Debug("put segment into final partition stats", zap.Int64("segmentID", segID), zap.Any("stats", segmentStat))
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resultPartitionStats.SegmentStats[segID] = segmentStat
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}
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}
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log.Info("mapping end",
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zap.Int64("collectionID", t.GetCollection()),
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zap.Int64("partitionID", t.partitionID),
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zap.Int("segmentFrom", len(inputSegments)),
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zap.Int("segmentTo", len(resultSegments)),
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zap.Duration("elapse", time.Since(mapStart)))
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return resultSegments, resultPartitionStats, nil
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}
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|
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func (t *clusteringCompactionTask) getBufferTotalUsedMemorySize() int64 {
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var totalBufferSize int64 = 0
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for _, buffer := range t.clusterBuffers {
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totalBufferSize = totalBufferSize + int64(buffer.writer.WrittenMemorySize()) + buffer.bufferMemorySize.Load()
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}
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return totalBufferSize
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}
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|
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func (t *clusteringCompactionTask) getCurrentBufferWrittenMemorySize() int64 {
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var totalBufferSize int64 = 0
|
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for _, buffer := range t.clusterBuffers {
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totalBufferSize = totalBufferSize + int64(buffer.writer.WrittenMemorySize())
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}
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return totalBufferSize
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}
|
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|
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// read insert log of one segment, mappingSegment into buckets according to clusteringKey. flush data to file when necessary
|
|
func (t *clusteringCompactionTask) mappingSegment(
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|
ctx context.Context,
|
|
segment *datapb.CompactionSegmentBinlogs,
|
|
delta map[interface{}]typeutil.Timestamp,
|
|
) error {
|
|
ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, fmt.Sprintf("mappingSegment-%d-%d", t.GetPlanID(), segment.GetSegmentID()))
|
|
defer span.End()
|
|
log := log.With(zap.Int64("planID", t.GetPlanID()),
|
|
zap.Int64("collectionID", t.GetCollection()),
|
|
zap.Int64("partitionID", t.partitionID),
|
|
zap.Int64("segmentID", segment.GetSegmentID()))
|
|
log.Info("mapping segment start")
|
|
processStart := time.Now()
|
|
fieldBinlogPaths := make([][]string, 0)
|
|
var (
|
|
expired int64 = 0
|
|
deleted int64 = 0
|
|
remained int64 = 0
|
|
)
|
|
|
|
isDeletedValue := func(v *storage.Value) bool {
|
|
ts, ok := delta[v.PK.GetValue()]
|
|
// insert task and delete task has the same ts when upsert
|
|
// here should be < instead of <=
|
|
// to avoid the upsert data to be deleted after compact
|
|
if ok && uint64(v.Timestamp) < ts {
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
mappingStats := &clusteringpb.ClusteringCentroidIdMappingStats{}
|
|
if t.isVectorClusteringKey {
|
|
offSetPath := t.segmentIDOffsetMapping[segment.SegmentID]
|
|
offsetBytes, err := t.binlogIO.Download(ctx, []string{offSetPath})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
err = proto.Unmarshal(offsetBytes[0], mappingStats)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
// Get the number of field binlog files from non-empty segment
|
|
var binlogNum int
|
|
for _, b := range segment.GetFieldBinlogs() {
|
|
if b != nil {
|
|
binlogNum = len(b.GetBinlogs())
|
|
break
|
|
}
|
|
}
|
|
// Unable to deal with all empty segments cases, so return error
|
|
if binlogNum == 0 {
|
|
log.Warn("compact wrong, all segments' binlogs are empty")
|
|
return merr.WrapErrIllegalCompactionPlan()
|
|
}
|
|
for idx := 0; idx < binlogNum; idx++ {
|
|
var ps []string
|
|
for _, f := range segment.GetFieldBinlogs() {
|
|
ps = append(ps, f.GetBinlogs()[idx].GetLogPath())
|
|
}
|
|
fieldBinlogPaths = append(fieldBinlogPaths, ps)
|
|
}
|
|
|
|
for _, paths := range fieldBinlogPaths {
|
|
allValues, err := t.binlogIO.Download(ctx, paths)
|
|
if err != nil {
|
|
log.Warn("compact wrong, fail to download insertLogs", zap.Error(err))
|
|
return err
|
|
}
|
|
blobs := lo.Map(allValues, func(v []byte, i int) *storage.Blob {
|
|
return &storage.Blob{Key: paths[i], Value: v}
|
|
})
|
|
pkIter, err := storage.NewBinlogDeserializeReader(blobs, t.primaryKeyField.GetFieldID())
|
|
if err != nil {
|
|
log.Warn("new insert binlogs Itr wrong", zap.Strings("paths", paths), zap.Error(err))
|
|
return err
|
|
}
|
|
|
|
var offset int64 = -1
|
|
for {
|
|
err := pkIter.Next()
|
|
if err != nil {
|
|
if err == sio.EOF {
|
|
break
|
|
} else {
|
|
log.Warn("compact wrong, failed to iter through data", zap.Error(err))
|
|
return err
|
|
}
|
|
}
|
|
v := pkIter.Value()
|
|
offset++
|
|
|
|
// Filtering deleted entity
|
|
if isDeletedValue(v) {
|
|
deleted++
|
|
continue
|
|
}
|
|
// Filtering expired entity
|
|
ts := typeutil.Timestamp(v.Timestamp)
|
|
if isExpiredEntity(t.plan.GetCollectionTtl(), t.currentTs, ts) {
|
|
expired++
|
|
continue
|
|
}
|
|
|
|
row, ok := v.Value.(map[typeutil.UniqueID]interface{})
|
|
if !ok {
|
|
log.Warn("transfer interface to map wrong", zap.Strings("paths", paths))
|
|
return errors.New("unexpected error")
|
|
}
|
|
|
|
clusteringKey := row[t.clusteringKeyField.FieldID]
|
|
var clusterBuffer *ClusterBuffer
|
|
if t.isVectorClusteringKey {
|
|
clusterBuffer = t.offsetToBufferFunc(offset, mappingStats.GetCentroidIdMapping())
|
|
} else {
|
|
clusterBuffer = t.keyToBufferFunc(clusteringKey)
|
|
}
|
|
err = t.writeToBuffer(ctx, clusterBuffer, v)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
remained++
|
|
|
|
if (remained+1)%100 == 0 {
|
|
currentBufferTotalMemorySize := t.getBufferTotalUsedMemorySize()
|
|
currentBufferWrittenMemorySize := t.getCurrentBufferWrittenMemorySize()
|
|
log.Debug("current buffer size", zap.Int64("currentBufferTotalMemorySize", currentBufferTotalMemorySize),
|
|
zap.Int64("currentBufferWrittenMemorySize", currentBufferWrittenMemorySize))
|
|
|
|
// trigger flushBinlog
|
|
currentSegmentNumRows := clusterBuffer.currentSegmentRowNum.Load()
|
|
if currentSegmentNumRows > t.plan.GetMaxSegmentRows() ||
|
|
clusterBuffer.writer.IsFull() {
|
|
// reach segment/binlog max size
|
|
t.clusterBufferLocks.Lock(clusterBuffer.id)
|
|
writer := clusterBuffer.writer
|
|
pack, _ := t.refreshBufferWriter(clusterBuffer)
|
|
log.Debug("buffer need to flush", zap.Int("bufferID", clusterBuffer.id),
|
|
zap.Bool("pack", pack),
|
|
zap.Int64("current segment", writer.GetSegmentID()),
|
|
zap.Int64("current segment num rows", currentSegmentNumRows),
|
|
zap.Int64("writer num", writer.GetRowNum()))
|
|
t.clusterBufferLocks.Unlock(clusterBuffer.id)
|
|
|
|
t.flushChan <- FlushSignal{
|
|
writer: writer,
|
|
pack: pack,
|
|
id: clusterBuffer.id,
|
|
}
|
|
} else if currentBufferTotalMemorySize > t.getMemoryBufferBlockFlushThreshold() && !t.hasSignal.Load() {
|
|
// reach flushBinlog trigger threshold
|
|
log.Debug("largest buffer need to flush", zap.Int64("currentBufferTotalMemorySize", currentBufferTotalMemorySize))
|
|
t.flushChan <- FlushSignal{}
|
|
t.hasSignal.Store(true)
|
|
}
|
|
|
|
// if the total buffer size is too large, block here, wait for memory release by flushBinlog
|
|
if currentBufferTotalMemorySize > t.getMemoryBufferBlockFlushThreshold() {
|
|
log.Debug("memory is already above the block watermark, pause writing",
|
|
zap.Int64("currentBufferTotalMemorySize", currentBufferTotalMemorySize))
|
|
loop:
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
log.Warn("stop waiting for memory buffer release as context done")
|
|
return nil
|
|
case <-t.done:
|
|
log.Warn("stop waiting for memory buffer release as task chan done")
|
|
return nil
|
|
default:
|
|
// currentSize := t.getCurrentBufferWrittenMemorySize()
|
|
currentSize := t.getBufferTotalUsedMemorySize()
|
|
if currentSize < t.getMemoryBufferBlockFlushThreshold() {
|
|
log.Debug("memory is already below the block watermark, continue writing",
|
|
zap.Int64("currentSize", currentSize))
|
|
break loop
|
|
}
|
|
time.Sleep(time.Millisecond * 200)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
log.Info("mapping segment end",
|
|
zap.Int64("remained_entities", remained),
|
|
zap.Int64("deleted_entities", deleted),
|
|
zap.Int64("expired_entities", expired),
|
|
zap.Int64("written_row_num", t.writtenRowNum.Load()),
|
|
zap.Duration("elapse", time.Since(processStart)))
|
|
return nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) writeToBuffer(ctx context.Context, clusterBuffer *ClusterBuffer, value *storage.Value) error {
|
|
t.clusterBufferLocks.Lock(clusterBuffer.id)
|
|
defer t.clusterBufferLocks.Unlock(clusterBuffer.id)
|
|
// prepare
|
|
if clusterBuffer.writer == nil {
|
|
log.Warn("unexpected behavior, please check", zap.Int("buffer id", clusterBuffer.id))
|
|
return fmt.Errorf("unexpected behavior, please check buffer id: %d", clusterBuffer.id)
|
|
}
|
|
err := clusterBuffer.writer.Write(value)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
t.writtenRowNum.Inc()
|
|
clusterBuffer.currentSegmentRowNum.Inc()
|
|
return nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) getWorkerPoolSize() int {
|
|
return int(math.Max(float64(paramtable.Get().DataNodeCfg.ClusteringCompactionWorkerPoolSize.GetAsInt()), 1.0))
|
|
}
|
|
|
|
// getMemoryBufferSize return memoryBufferSize
|
|
func (t *clusteringCompactionTask) getMemoryBufferSize() int64 {
|
|
return int64(float64(hardware.GetMemoryCount()) * paramtable.Get().DataNodeCfg.ClusteringCompactionMemoryBufferRatio.GetAsFloat())
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) getMemoryBufferLowWatermark() int64 {
|
|
return int64(float64(t.memoryBufferSize) * 0.3)
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) getMemoryBufferHighWatermark() int64 {
|
|
return int64(float64(t.memoryBufferSize) * 0.9)
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) getMemoryBufferBlockFlushThreshold() int64 {
|
|
return t.memoryBufferSize
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) backgroundFlush(ctx context.Context) {
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
log.Info("clustering compaction task context exit")
|
|
return
|
|
case <-t.done:
|
|
log.Info("clustering compaction task done")
|
|
return
|
|
case signal := <-t.flushChan:
|
|
var err error
|
|
if signal.done {
|
|
t.doneChan <- struct{}{}
|
|
} else if signal.writer == nil {
|
|
err = t.flushLargestBuffers(ctx)
|
|
t.hasSignal.Store(false)
|
|
} else {
|
|
future := t.flushPool.Submit(func() (any, error) {
|
|
err := t.flushBinlog(ctx, t.clusterBuffers[signal.id], signal.writer, signal.pack)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return struct{}{}, nil
|
|
})
|
|
err = conc.AwaitAll(future)
|
|
}
|
|
if err != nil {
|
|
log.Warn("fail to flushBinlog data", zap.Error(err))
|
|
// todo handle error
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) flushLargestBuffers(ctx context.Context) error {
|
|
// only one flushLargestBuffers or flushAll should do at the same time
|
|
getLock := t.flushMutex.TryLock()
|
|
if !getLock {
|
|
return nil
|
|
}
|
|
defer t.flushMutex.Unlock()
|
|
currentMemorySize := t.getBufferTotalUsedMemorySize()
|
|
if currentMemorySize <= t.getMemoryBufferLowWatermark() {
|
|
log.Info("memory low water mark", zap.Int64("memoryBufferSize", t.getBufferTotalUsedMemorySize()))
|
|
return nil
|
|
}
|
|
_, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, "flushLargestBuffers")
|
|
defer span.End()
|
|
bufferIDs := make([]int, 0)
|
|
for _, buffer := range t.clusterBuffers {
|
|
bufferIDs = append(bufferIDs, buffer.id)
|
|
}
|
|
sort.Slice(bufferIDs, func(i, j int) bool {
|
|
return t.clusterBuffers[i].writer.GetRowNum() >
|
|
t.clusterBuffers[j].writer.GetRowNum()
|
|
})
|
|
log.Info("start flushLargestBuffers", zap.Ints("bufferIDs", bufferIDs), zap.Int64("currentMemorySize", currentMemorySize))
|
|
|
|
futures := make([]*conc.Future[any], 0)
|
|
for _, bufferId := range bufferIDs {
|
|
t.clusterBufferLocks.Lock(bufferId)
|
|
buffer := t.clusterBuffers[bufferId]
|
|
writer := buffer.writer
|
|
currentMemorySize -= int64(writer.WrittenMemorySize())
|
|
pack, _ := t.refreshBufferWriter(buffer)
|
|
t.clusterBufferLocks.Unlock(bufferId)
|
|
|
|
log.Info("currentMemorySize after flush buffer binlog",
|
|
zap.Int64("currentMemorySize", currentMemorySize),
|
|
zap.Int("bufferID", bufferId),
|
|
zap.Uint64("WrittenMemorySize()", writer.WrittenMemorySize()),
|
|
zap.Int64("RowNum", writer.GetRowNum()))
|
|
future := t.flushPool.Submit(func() (any, error) {
|
|
err := t.flushBinlog(ctx, buffer, writer, pack)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return struct{}{}, nil
|
|
})
|
|
futures = append(futures, future)
|
|
|
|
if currentMemorySize <= t.getMemoryBufferLowWatermark() {
|
|
log.Info("reach memory low water mark", zap.Int64("memoryBufferSize", t.getBufferTotalUsedMemorySize()))
|
|
break
|
|
}
|
|
}
|
|
if err := conc.AwaitAll(futures...); err != nil {
|
|
return err
|
|
}
|
|
|
|
log.Info("flushLargestBuffers end", zap.Int64("currentMemorySize", currentMemorySize))
|
|
return nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) flushAll(ctx context.Context) error {
|
|
// only one flushLargestBuffers or flushAll should do at the same time
|
|
t.flushMutex.Lock()
|
|
defer t.flushMutex.Unlock()
|
|
futures := make([]*conc.Future[any], 0)
|
|
for _, buffer := range t.clusterBuffers {
|
|
buffer := buffer
|
|
future := t.flushPool.Submit(func() (any, error) {
|
|
err := t.flushBinlog(ctx, buffer, buffer.writer, true)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return struct{}{}, nil
|
|
})
|
|
futures = append(futures, future)
|
|
}
|
|
if err := conc.AwaitAll(futures...); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) packBufferToSegment(ctx context.Context, buffer *ClusterBuffer, writer *SegmentWriter) error {
|
|
if binlogs, ok := buffer.flushedBinlogs[writer.GetSegmentID()]; !ok || len(binlogs) == 0 {
|
|
return nil
|
|
}
|
|
|
|
insertLogs := make([]*datapb.FieldBinlog, 0)
|
|
for _, fieldBinlog := range buffer.flushedBinlogs[writer.GetSegmentID()] {
|
|
insertLogs = append(insertLogs, fieldBinlog)
|
|
}
|
|
|
|
numRows := buffer.flushedRowNum[writer.GetSegmentID()]
|
|
statPaths, err := statSerializeWrite(ctx, t.binlogIO, t.logIDAlloc, writer, numRows.Load())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// pack current flushBinlog data into a segment
|
|
seg := &datapb.CompactionSegment{
|
|
PlanID: t.plan.GetPlanID(),
|
|
SegmentID: writer.GetSegmentID(),
|
|
NumOfRows: numRows.Load(),
|
|
InsertLogs: insertLogs,
|
|
Field2StatslogPaths: []*datapb.FieldBinlog{statPaths},
|
|
Channel: t.plan.GetChannel(),
|
|
}
|
|
buffer.uploadedSegments = append(buffer.uploadedSegments, seg)
|
|
segmentStats := storage.SegmentStats{
|
|
FieldStats: []storage.FieldStats{buffer.clusteringKeyFieldStats.Clone()},
|
|
NumRows: int(numRows.Load()),
|
|
}
|
|
buffer.uploadedSegmentStats[writer.GetSegmentID()] = segmentStats
|
|
|
|
for _, binlog := range seg.InsertLogs {
|
|
log.Debug("pack binlog in segment", zap.Int64("partitionID", t.partitionID), zap.Int64("segID", writer.GetSegmentID()), zap.String("binlog", binlog.String()))
|
|
}
|
|
log.Debug("finish pack segment", zap.Int64("partitionID", t.partitionID),
|
|
zap.Int64("segID", seg.GetSegmentID()),
|
|
zap.Int64("row num", seg.GetNumOfRows()))
|
|
|
|
// clear segment binlogs cache
|
|
buffer.flushedBinlogs[writer.GetSegmentID()] = nil
|
|
//set old writer nil
|
|
writer = nil
|
|
return nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) flushBinlog(ctx context.Context, buffer *ClusterBuffer, writer *SegmentWriter, pack bool) error {
|
|
_, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, fmt.Sprintf("flushBinlog-%d", writer.GetSegmentID()))
|
|
defer span.End()
|
|
if writer == nil {
|
|
log.Warn("buffer writer is nil, please check", zap.Int("buffer id", buffer.id))
|
|
return fmt.Errorf("buffer: %d writer is nil, please check", buffer.id)
|
|
}
|
|
buffer.flushLock.Lock()
|
|
defer buffer.flushLock.Unlock()
|
|
writtenMemorySize := int64(writer.WrittenMemorySize())
|
|
writtenRowNum := writer.GetRowNum()
|
|
log := log.With(zap.Int("bufferID", buffer.id),
|
|
zap.Int64("segmentID", writer.GetSegmentID()),
|
|
zap.Bool("pack", pack),
|
|
zap.Int64("writerRowNum", writtenRowNum),
|
|
zap.Int64("writtenMemorySize", writtenMemorySize),
|
|
zap.Int64("bufferMemorySize", buffer.bufferMemorySize.Load()),
|
|
)
|
|
|
|
log.Info("start flush binlog")
|
|
if writtenRowNum <= 0 {
|
|
log.Debug("writerRowNum is zero, skip flush")
|
|
if pack {
|
|
return t.packBufferToSegment(ctx, buffer, writer)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
start := time.Now()
|
|
kvs, partialBinlogs, err := serializeWrite(ctx, t.logIDAlloc, writer)
|
|
if err != nil {
|
|
log.Warn("compact wrong, failed to serialize writer", zap.Error(err))
|
|
return err
|
|
}
|
|
|
|
if err := t.binlogIO.Upload(ctx, kvs); err != nil {
|
|
log.Warn("compact wrong, failed to upload kvs", zap.Error(err))
|
|
return err
|
|
}
|
|
|
|
if info, ok := buffer.flushedBinlogs[writer.GetSegmentID()]; !ok || info == nil {
|
|
buffer.flushedBinlogs[writer.GetSegmentID()] = make(map[typeutil.UniqueID]*datapb.FieldBinlog)
|
|
}
|
|
|
|
for fID, path := range partialBinlogs {
|
|
tmpBinlog, ok := buffer.flushedBinlogs[writer.GetSegmentID()][fID]
|
|
if !ok {
|
|
tmpBinlog = path
|
|
} else {
|
|
tmpBinlog.Binlogs = append(tmpBinlog.Binlogs, path.GetBinlogs()...)
|
|
}
|
|
buffer.flushedBinlogs[writer.GetSegmentID()][fID] = tmpBinlog
|
|
}
|
|
curSegFlushedRowNum := buffer.flushedRowNum[writer.GetSegmentID()]
|
|
curSegFlushedRowNum.Add(writtenRowNum)
|
|
buffer.flushedRowNum[writer.GetSegmentID()] = curSegFlushedRowNum
|
|
|
|
// clean buffer with writer
|
|
buffer.bufferMemorySize.Sub(writtenMemorySize)
|
|
|
|
t.flushCount.Inc()
|
|
if pack {
|
|
if err := t.packBufferToSegment(ctx, buffer, writer); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
log.Info("finish flush binlogs", zap.Int64("flushCount", t.flushCount.Load()),
|
|
zap.Int64("cost", time.Since(start).Milliseconds()))
|
|
return nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) uploadPartitionStats(ctx context.Context, collectionID, partitionID typeutil.UniqueID, partitionStats *storage.PartitionStatsSnapshot) error {
|
|
// use planID as partitionStats version
|
|
version := t.plan.PlanID
|
|
partitionStats.Version = version
|
|
partitionStatsBytes, err := storage.SerializePartitionStatsSnapshot(partitionStats)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
rootPath := strings.Split(t.plan.AnalyzeResultPath, common.AnalyzeStatsPath)[0]
|
|
newStatsPath := path.Join(rootPath, common.PartitionStatsPath, metautil.JoinIDPath(collectionID, partitionID), t.plan.GetChannel(), strconv.FormatInt(version, 10))
|
|
kv := map[string][]byte{
|
|
newStatsPath: partitionStatsBytes,
|
|
}
|
|
err = t.binlogIO.Upload(ctx, kv)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
log.Info("Finish upload PartitionStats file", zap.String("key", newStatsPath), zap.Int("length", len(partitionStatsBytes)))
|
|
return nil
|
|
}
|
|
|
|
// cleanUp try best to clean all temp datas
|
|
func (t *clusteringCompactionTask) cleanUp(ctx context.Context) {
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) scalarAnalyze(ctx context.Context) (map[interface{}]int64, error) {
|
|
ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, fmt.Sprintf("scalarAnalyze-%d", t.GetPlanID()))
|
|
defer span.End()
|
|
inputSegments := t.plan.GetSegmentBinlogs()
|
|
futures := make([]*conc.Future[any], 0, len(inputSegments))
|
|
analyzeStart := time.Now()
|
|
var mutex sync.Mutex
|
|
analyzeDict := make(map[interface{}]int64, 0)
|
|
for _, segment := range inputSegments {
|
|
segmentClone := &datapb.CompactionSegmentBinlogs{
|
|
SegmentID: segment.SegmentID,
|
|
FieldBinlogs: segment.FieldBinlogs,
|
|
Field2StatslogPaths: segment.Field2StatslogPaths,
|
|
Deltalogs: segment.Deltalogs,
|
|
InsertChannel: segment.InsertChannel,
|
|
Level: segment.Level,
|
|
CollectionID: segment.CollectionID,
|
|
PartitionID: segment.PartitionID,
|
|
}
|
|
future := t.mappingPool.Submit(func() (any, error) {
|
|
analyzeResult, err := t.scalarAnalyzeSegment(ctx, segmentClone)
|
|
mutex.Lock()
|
|
defer mutex.Unlock()
|
|
for key, v := range analyzeResult {
|
|
if _, exist := analyzeDict[key]; exist {
|
|
analyzeDict[key] = analyzeDict[key] + v
|
|
} else {
|
|
analyzeDict[key] = v
|
|
}
|
|
}
|
|
return struct{}{}, err
|
|
})
|
|
futures = append(futures, future)
|
|
}
|
|
if err := conc.AwaitAll(futures...); err != nil {
|
|
return nil, err
|
|
}
|
|
log.Info("analyze end",
|
|
zap.Int64("collectionID", t.GetCollection()),
|
|
zap.Int64("partitionID", t.partitionID),
|
|
zap.Int("segments", len(inputSegments)),
|
|
zap.Duration("elapse", time.Since(analyzeStart)))
|
|
return analyzeDict, nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) scalarAnalyzeSegment(
|
|
ctx context.Context,
|
|
segment *datapb.CompactionSegmentBinlogs,
|
|
) (map[interface{}]int64, error) {
|
|
ctx, span := otel.Tracer(typeutil.DataNodeRole).Start(ctx, fmt.Sprintf("scalarAnalyzeSegment-%d-%d", t.GetPlanID(), segment.GetSegmentID()))
|
|
defer span.End()
|
|
log := log.With(zap.Int64("planID", t.GetPlanID()), zap.Int64("segmentID", segment.GetSegmentID()))
|
|
|
|
// vars
|
|
processStart := time.Now()
|
|
fieldBinlogPaths := make([][]string, 0)
|
|
// initial timestampFrom, timestampTo = -1, -1 is an illegal value, only to mark initial state
|
|
var (
|
|
timestampTo int64 = -1
|
|
timestampFrom int64 = -1
|
|
expired int64 = 0
|
|
deleted int64 = 0
|
|
remained int64 = 0
|
|
analyzeResult map[interface{}]int64 = make(map[interface{}]int64, 0)
|
|
)
|
|
|
|
// Get the number of field binlog files from non-empty segment
|
|
var binlogNum int
|
|
for _, b := range segment.GetFieldBinlogs() {
|
|
if b != nil {
|
|
binlogNum = len(b.GetBinlogs())
|
|
break
|
|
}
|
|
}
|
|
// Unable to deal with all empty segments cases, so return error
|
|
if binlogNum == 0 {
|
|
log.Warn("compact wrong, all segments' binlogs are empty")
|
|
return nil, merr.WrapErrIllegalCompactionPlan("all segments' binlogs are empty")
|
|
}
|
|
log.Debug("binlogNum", zap.Int("binlogNum", binlogNum))
|
|
for idx := 0; idx < binlogNum; idx++ {
|
|
var ps []string
|
|
for _, f := range segment.GetFieldBinlogs() {
|
|
// todo add a new reader only read one column
|
|
if f.FieldID == t.primaryKeyField.GetFieldID() || f.FieldID == t.clusteringKeyField.GetFieldID() || f.FieldID == common.RowIDField || f.FieldID == common.TimeStampField {
|
|
ps = append(ps, f.GetBinlogs()[idx].GetLogPath())
|
|
}
|
|
}
|
|
fieldBinlogPaths = append(fieldBinlogPaths, ps)
|
|
}
|
|
|
|
for _, path := range fieldBinlogPaths {
|
|
bytesArr, err := t.binlogIO.Download(ctx, path)
|
|
blobs := make([]*storage.Blob, len(bytesArr))
|
|
for i := range bytesArr {
|
|
blobs[i] = &storage.Blob{Value: bytesArr[i]}
|
|
}
|
|
if err != nil {
|
|
log.Warn("download insertlogs wrong", zap.Strings("path", path), zap.Error(err))
|
|
return nil, err
|
|
}
|
|
|
|
pkIter, err := storage.NewInsertBinlogIterator(blobs, t.primaryKeyField.GetFieldID(), t.primaryKeyField.GetDataType())
|
|
if err != nil {
|
|
log.Warn("new insert binlogs Itr wrong", zap.Strings("path", path), zap.Error(err))
|
|
return nil, err
|
|
}
|
|
|
|
// log.Info("pkIter.RowNum()", zap.Int("pkIter.RowNum()", pkIter.RowNum()), zap.Bool("hasNext", pkIter.HasNext()))
|
|
for pkIter.HasNext() {
|
|
vIter, _ := pkIter.Next()
|
|
v, ok := vIter.(*storage.Value)
|
|
if !ok {
|
|
log.Warn("transfer interface to Value wrong", zap.Strings("path", path))
|
|
return nil, errors.New("unexpected error")
|
|
}
|
|
|
|
// Filtering expired entity
|
|
ts := typeutil.Timestamp(v.Timestamp)
|
|
if isExpiredEntity(t.plan.GetCollectionTtl(), t.currentTs, ts) {
|
|
expired++
|
|
continue
|
|
}
|
|
|
|
// Update timestampFrom, timestampTo
|
|
if v.Timestamp < timestampFrom || timestampFrom == -1 {
|
|
timestampFrom = v.Timestamp
|
|
}
|
|
if v.Timestamp > timestampTo || timestampFrom == -1 {
|
|
timestampTo = v.Timestamp
|
|
}
|
|
// rowValue := vIter.GetData().(*iterators.InsertRow).GetValue()
|
|
row, ok := v.Value.(map[typeutil.UniqueID]interface{})
|
|
if !ok {
|
|
log.Warn("transfer interface to map wrong", zap.Strings("path", path))
|
|
return nil, errors.New("unexpected error")
|
|
}
|
|
key := row[t.clusteringKeyField.GetFieldID()]
|
|
if _, exist := analyzeResult[key]; exist {
|
|
analyzeResult[key] = analyzeResult[key] + 1
|
|
} else {
|
|
analyzeResult[key] = 1
|
|
}
|
|
remained++
|
|
}
|
|
}
|
|
|
|
log.Info("analyze segment end",
|
|
zap.Int64("remained entities", remained),
|
|
zap.Int64("deleted entities", deleted),
|
|
zap.Int64("expired entities", expired),
|
|
zap.Duration("map elapse", time.Since(processStart)))
|
|
return analyzeResult, nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) scalarPlan(dict map[interface{}]int64) [][]interface{} {
|
|
keys := lo.MapToSlice(dict, func(k interface{}, _ int64) interface{} {
|
|
return k
|
|
})
|
|
sort.Slice(keys, func(i, j int) bool {
|
|
return storage.NewScalarFieldValue(t.clusteringKeyField.DataType, keys[i]).LE(storage.NewScalarFieldValue(t.clusteringKeyField.DataType, keys[j]))
|
|
})
|
|
|
|
buckets := make([][]interface{}, 0)
|
|
currentBucket := make([]interface{}, 0)
|
|
var currentBucketSize int64 = 0
|
|
maxRows := t.plan.MaxSegmentRows
|
|
preferRows := t.plan.PreferSegmentRows
|
|
for _, key := range keys {
|
|
// todo can optimize
|
|
if dict[key] > preferRows {
|
|
if len(currentBucket) != 0 {
|
|
buckets = append(buckets, currentBucket)
|
|
currentBucket = make([]interface{}, 0)
|
|
currentBucketSize = 0
|
|
}
|
|
buckets = append(buckets, []interface{}{key})
|
|
} else if currentBucketSize+dict[key] > maxRows {
|
|
buckets = append(buckets, currentBucket)
|
|
currentBucket = []interface{}{key}
|
|
currentBucketSize = dict[key]
|
|
} else if currentBucketSize+dict[key] > preferRows {
|
|
currentBucket = append(currentBucket, key)
|
|
buckets = append(buckets, currentBucket)
|
|
currentBucket = make([]interface{}, 0)
|
|
currentBucketSize = 0
|
|
} else {
|
|
currentBucket = append(currentBucket, key)
|
|
currentBucketSize += dict[key]
|
|
}
|
|
}
|
|
buckets = append(buckets, currentBucket)
|
|
return buckets
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) refreshBufferWriter(buffer *ClusterBuffer) (bool, error) {
|
|
var segmentID int64
|
|
var err error
|
|
var pack bool
|
|
if buffer.writer != nil {
|
|
segmentID = buffer.writer.GetSegmentID()
|
|
buffer.bufferMemorySize.Add(int64(buffer.writer.WrittenMemorySize()))
|
|
}
|
|
if buffer.writer == nil || buffer.currentSegmentRowNum.Load()+buffer.writer.GetRowNum() > t.plan.GetMaxSegmentRows() {
|
|
pack = true
|
|
segmentID, err = t.segIDAlloc.AllocOne()
|
|
if err != nil {
|
|
return pack, err
|
|
}
|
|
buffer.currentSegmentRowNum.Store(0)
|
|
}
|
|
|
|
writer, err := NewSegmentWriter(t.plan.GetSchema(), t.plan.MaxSegmentRows, segmentID, t.partitionID, t.collectionID)
|
|
if err != nil {
|
|
return pack, err
|
|
}
|
|
|
|
buffer.writer = writer
|
|
return pack, nil
|
|
}
|
|
|
|
func (t *clusteringCompactionTask) GetSlotUsage() int64 {
|
|
return t.plan.GetSlotUsage()
|
|
}
|