mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
67 lines
1.8 KiB
Go
67 lines
1.8 KiB
Go
// Copyright 2015 The etcd Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package mvcc
|
|
|
|
import (
|
|
"encoding/binary"
|
|
"time"
|
|
)
|
|
|
|
func (s *store) scheduleCompaction(compactMainRev int64, keep map[revision]struct{}) bool {
|
|
totalStart := time.Now()
|
|
defer dbCompactionTotalDurations.Observe(float64(time.Since(totalStart) / time.Millisecond))
|
|
|
|
end := make([]byte, 8)
|
|
binary.BigEndian.PutUint64(end, uint64(compactMainRev+1))
|
|
|
|
batchsize := int64(10000)
|
|
last := make([]byte, 8+1+8)
|
|
for {
|
|
var rev revision
|
|
|
|
start := time.Now()
|
|
tx := s.b.BatchTx()
|
|
tx.Lock()
|
|
|
|
keys, _ := tx.UnsafeRange(keyBucketName, last, end, batchsize)
|
|
for _, key := range keys {
|
|
rev = bytesToRev(key)
|
|
if _, ok := keep[rev]; !ok {
|
|
tx.UnsafeDelete(keyBucketName, key)
|
|
}
|
|
}
|
|
|
|
if len(keys) < int(batchsize) {
|
|
rbytes := make([]byte, 8+1+8)
|
|
revToBytes(revision{main: compactMainRev}, rbytes)
|
|
tx.UnsafePut(metaBucketName, finishedCompactKeyName, rbytes)
|
|
tx.Unlock()
|
|
plog.Printf("finished scheduled compaction at %d (took %v)", compactMainRev, time.Since(totalStart))
|
|
return true
|
|
}
|
|
|
|
// update last
|
|
revToBytes(revision{main: rev.main, sub: rev.sub + 1}, last)
|
|
tx.Unlock()
|
|
dbCompactionPauseDurations.Observe(float64(time.Since(start) / time.Millisecond))
|
|
|
|
select {
|
|
case <-time.After(100 * time.Millisecond):
|
|
case <-s.stopc:
|
|
return false
|
|
}
|
|
}
|
|
}
|