mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
synced 2024-11-11 02:35:18 +00:00
621 lines
18 KiB
Go
621 lines
18 KiB
Go
// Copyright 2020 The LevelDB-Go and Pebble Authors. All rights reserved. Use
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// of this source code is governed by a BSD-style license that can be found in
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// the LICENSE file.
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package manifest
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import (
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"bytes"
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"fmt"
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"io"
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"math"
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"os"
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"slices"
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"sort"
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"strconv"
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"strings"
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"testing"
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"time"
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"github.com/cockroachdb/datadriven"
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"github.com/cockroachdb/pebble/internal/base"
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"github.com/cockroachdb/pebble/internal/testkeys"
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"github.com/cockroachdb/pebble/record"
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"github.com/stretchr/testify/require"
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"golang.org/x/exp/rand"
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)
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func readManifest(filename string) (*Version, error) {
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f, err := os.Open(filename)
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if err != nil {
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return nil, err
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}
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defer f.Close()
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rr := record.NewReader(f, 0 /* logNum */)
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var v *Version
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addedByFileNum := make(map[base.FileNum]*FileMetadata)
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for {
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r, err := rr.Next()
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if err == io.EOF {
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break
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}
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if err != nil {
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return nil, err
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}
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var ve VersionEdit
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if err = ve.Decode(r); err != nil {
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return nil, err
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}
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var bve BulkVersionEdit
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bve.AddedByFileNum = addedByFileNum
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if err := bve.Accumulate(&ve); err != nil {
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return nil, err
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}
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if v, err = bve.Apply(v, base.DefaultComparer.Compare, base.DefaultFormatter, 10<<20, 32000, nil, ProhibitSplitUserKeys); err != nil {
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return nil, err
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}
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}
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return v, nil
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}
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func visualizeSublevels(
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s *L0Sublevels, compactionFiles bitSet, otherLevels [][]*FileMetadata,
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) string {
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var buf strings.Builder
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if compactionFiles == nil {
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compactionFiles = newBitSet(s.levelMetadata.Len())
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}
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largestChar := byte('a')
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printLevel := func(files []*FileMetadata, level string, isL0 bool) {
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lastChar := byte('a')
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fmt.Fprintf(&buf, "L%s:", level)
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for i := 0; i < 5-len(level); i++ {
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buf.WriteByte(' ')
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}
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for j, f := range files {
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for lastChar < f.Smallest.UserKey[0] {
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buf.WriteString(" ")
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lastChar++
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}
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buf.WriteByte(f.Smallest.UserKey[0])
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middleChar := byte('-')
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if isL0 {
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if compactionFiles[f.L0Index] {
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middleChar = '+'
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} else if f.IsCompacting() {
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if f.IsIntraL0Compacting {
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middleChar = '^'
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} else {
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middleChar = 'v'
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}
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}
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} else if f.IsCompacting() {
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middleChar = '='
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}
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if largestChar < f.Largest.UserKey[0] {
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largestChar = f.Largest.UserKey[0]
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}
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if f.Smallest.UserKey[0] == f.Largest.UserKey[0] {
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buf.WriteByte(f.Largest.UserKey[0])
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if compactionFiles[f.L0Index] {
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buf.WriteByte('+')
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} else if j < len(files)-1 {
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buf.WriteByte(' ')
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}
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lastChar++
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continue
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}
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buf.WriteByte(middleChar)
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buf.WriteByte(middleChar)
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lastChar++
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for lastChar < f.Largest.UserKey[0] {
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buf.WriteByte(middleChar)
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buf.WriteByte(middleChar)
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buf.WriteByte(middleChar)
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lastChar++
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}
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if f.Largest.IsExclusiveSentinel() &&
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j < len(files)-1 && files[j+1].Smallest.UserKey[0] == f.Largest.UserKey[0] {
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// This case happens where two successive files have
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// matching end/start user keys but where the left-side file
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// has the sentinel key as its end key trailer. In this case
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// we print the sstables as:
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//
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// a------d------g
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//
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continue
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}
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buf.WriteByte(middleChar)
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buf.WriteByte(f.Largest.UserKey[0])
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if j < len(files)-1 {
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buf.WriteByte(' ')
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}
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lastChar++
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}
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fmt.Fprintf(&buf, "\n")
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}
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for i := len(s.levelFiles) - 1; i >= 0; i-- {
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printLevel(s.levelFiles[i], fmt.Sprintf("0.%d", i), true)
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}
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for i := range otherLevels {
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if len(otherLevels[i]) == 0 {
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continue
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}
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printLevel(otherLevels[i], strconv.Itoa(i+1), false)
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}
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buf.WriteString(" ")
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for b := byte('a'); b <= largestChar; b++ {
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buf.WriteByte(b)
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buf.WriteByte(b)
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if b < largestChar {
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buf.WriteByte(' ')
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}
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}
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buf.WriteByte('\n')
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return buf.String()
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}
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func TestL0Sublevels(t *testing.T) {
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parseMeta := func(s string) (*FileMetadata, error) {
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parts := strings.Split(s, ":")
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if len(parts) != 2 {
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t.Fatalf("malformed table spec: %s", s)
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}
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fileNum, err := strconv.Atoi(strings.TrimSpace(parts[0]))
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if err != nil {
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return nil, err
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}
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fields := strings.Fields(parts[1])
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keyRange := strings.Split(strings.TrimSpace(fields[0]), "-")
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m := (&FileMetadata{}).ExtendPointKeyBounds(
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base.DefaultComparer.Compare,
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base.ParseInternalKey(strings.TrimSpace(keyRange[0])),
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base.ParseInternalKey(strings.TrimSpace(keyRange[1])),
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)
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m.SmallestSeqNum = m.Smallest.SeqNum()
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m.LargestSeqNum = m.Largest.SeqNum()
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if m.Largest.IsExclusiveSentinel() {
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m.LargestSeqNum = m.SmallestSeqNum
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}
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m.FileNum = base.FileNum(fileNum)
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m.Size = uint64(256)
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m.InitPhysicalBacking()
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if len(fields) > 1 {
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for _, field := range fields[1:] {
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parts := strings.Split(field, "=")
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switch parts[0] {
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case "base_compacting":
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m.IsIntraL0Compacting = false
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m.CompactionState = CompactionStateCompacting
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case "intra_l0_compacting":
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m.IsIntraL0Compacting = true
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m.CompactionState = CompactionStateCompacting
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case "compacting":
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m.CompactionState = CompactionStateCompacting
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case "size":
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sizeInt, err := strconv.Atoi(parts[1])
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if err != nil {
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return nil, err
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}
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m.Size = uint64(sizeInt)
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}
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}
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}
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return m, nil
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}
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var err error
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var fileMetas [NumLevels][]*FileMetadata
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var explicitSublevels [][]*FileMetadata
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var activeCompactions []L0Compaction
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var sublevels *L0Sublevels
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baseLevel := NumLevels - 1
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datadriven.RunTest(t, "testdata/l0_sublevels", func(t *testing.T, td *datadriven.TestData) string {
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pickBaseCompaction := false
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level := 0
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addL0FilesOpt := false
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switch td.Cmd {
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case "add-l0-files":
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addL0FilesOpt = true
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level = 0
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fallthrough
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case "define":
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if !addL0FilesOpt {
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fileMetas = [NumLevels][]*FileMetadata{}
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baseLevel = NumLevels - 1
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activeCompactions = nil
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}
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explicitSublevels = [][]*FileMetadata{}
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sublevel := -1
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addedL0Files := make([]*FileMetadata, 0)
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for _, data := range strings.Split(td.Input, "\n") {
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data = strings.TrimSpace(data)
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switch data[:2] {
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case "L0", "L1", "L2", "L3", "L4", "L5", "L6":
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level, err = strconv.Atoi(data[1:2])
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if err != nil {
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return err.Error()
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}
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if level == 0 && len(data) > 3 {
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// Sublevel was specified.
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sublevel, err = strconv.Atoi(data[3:])
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if err != nil {
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return err.Error()
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}
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} else {
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sublevel = -1
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}
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default:
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meta, err := parseMeta(data)
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if err != nil {
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return err.Error()
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}
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if level != 0 && level < baseLevel {
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baseLevel = level
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}
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fileMetas[level] = append(fileMetas[level], meta)
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if level == 0 {
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addedL0Files = append(addedL0Files, meta)
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}
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if sublevel != -1 {
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for len(explicitSublevels) <= sublevel {
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explicitSublevels = append(explicitSublevels, []*FileMetadata{})
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}
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explicitSublevels[sublevel] = append(explicitSublevels[sublevel], meta)
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}
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}
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}
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flushSplitMaxBytes := 64
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initialize := true
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for _, arg := range td.CmdArgs {
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switch arg.Key {
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case "flush_split_max_bytes":
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flushSplitMaxBytes, err = strconv.Atoi(arg.Vals[0])
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if err != nil {
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t.Fatal(err)
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}
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case "no_initialize":
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// This case is for use with explicitly-specified sublevels
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// only.
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initialize = false
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}
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}
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SortBySeqNum(fileMetas[0])
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for i := 1; i < NumLevels; i++ {
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SortBySmallest(fileMetas[i], base.DefaultComparer.Compare)
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}
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levelMetadata := makeLevelMetadata(base.DefaultComparer.Compare, 0, fileMetas[0])
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if initialize {
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if addL0FilesOpt {
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SortBySeqNum(addedL0Files)
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sublevels, err = sublevels.AddL0Files(addedL0Files, int64(flushSplitMaxBytes), &levelMetadata)
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// Check if the output matches a full initialization.
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sublevels2, _ := NewL0Sublevels(&levelMetadata, base.DefaultComparer.Compare, base.DefaultFormatter, int64(flushSplitMaxBytes))
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if sublevels != nil && sublevels2 != nil {
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require.Equal(t, sublevels.flushSplitUserKeys, sublevels2.flushSplitUserKeys)
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require.Equal(t, sublevels.levelFiles, sublevels2.levelFiles)
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}
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} else {
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sublevels, err = NewL0Sublevels(
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&levelMetadata,
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base.DefaultComparer.Compare,
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base.DefaultFormatter,
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int64(flushSplitMaxBytes))
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}
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if err != nil {
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return err.Error()
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}
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sublevels.InitCompactingFileInfo(nil)
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} else {
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// This case is for use with explicitly-specified sublevels
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// only.
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sublevels = &L0Sublevels{
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levelFiles: explicitSublevels,
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cmp: base.DefaultComparer.Compare,
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formatKey: base.DefaultFormatter,
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levelMetadata: &levelMetadata,
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}
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for _, files := range explicitSublevels {
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sublevels.Levels = append(sublevels.Levels, NewLevelSliceSpecificOrder(files))
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}
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}
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if err != nil {
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t.Fatal(err)
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}
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var builder strings.Builder
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builder.WriteString(sublevels.describe(true))
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builder.WriteString(visualizeSublevels(sublevels, nil, fileMetas[1:]))
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return builder.String()
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case "pick-base-compaction":
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pickBaseCompaction = true
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fallthrough
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case "pick-intra-l0-compaction":
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minCompactionDepth := 3
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earliestUnflushedSeqNum := uint64(math.MaxUint64)
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for _, arg := range td.CmdArgs {
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switch arg.Key {
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case "min_depth":
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minCompactionDepth, err = strconv.Atoi(arg.Vals[0])
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if err != nil {
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t.Fatal(err)
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}
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case "earliest_unflushed_seqnum":
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eusnInt, err := strconv.Atoi(arg.Vals[0])
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if err != nil {
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t.Fatal(err)
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}
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earliestUnflushedSeqNum = uint64(eusnInt)
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}
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}
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var lcf *L0CompactionFiles
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if pickBaseCompaction {
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baseFiles := NewLevelSliceKeySorted(base.DefaultComparer.Compare, fileMetas[baseLevel])
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lcf, err = sublevels.PickBaseCompaction(minCompactionDepth, baseFiles)
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if err == nil && lcf != nil {
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// Try to extend the base compaction into a more rectangular
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// shape, using the smallest/largest keys of the files before
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// and after overlapping base files. This mimics the logic
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// the compactor is expected to implement.
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baseFiles := fileMetas[baseLevel]
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firstFile := sort.Search(len(baseFiles), func(i int) bool {
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return sublevels.cmp(baseFiles[i].Largest.UserKey, sublevels.orderedIntervals[lcf.minIntervalIndex].startKey.key) >= 0
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})
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lastFile := sort.Search(len(baseFiles), func(i int) bool {
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return sublevels.cmp(baseFiles[i].Smallest.UserKey, sublevels.orderedIntervals[lcf.maxIntervalIndex+1].startKey.key) >= 0
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})
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startKey := base.InvalidInternalKey
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endKey := base.InvalidInternalKey
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if firstFile > 0 {
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startKey = baseFiles[firstFile-1].Largest
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}
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if lastFile < len(baseFiles) {
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endKey = baseFiles[lastFile].Smallest
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}
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sublevels.ExtendL0ForBaseCompactionTo(
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startKey,
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endKey,
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lcf)
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}
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} else {
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lcf, err = sublevels.PickIntraL0Compaction(earliestUnflushedSeqNum, minCompactionDepth)
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}
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if err != nil {
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return fmt.Sprintf("error: %s", err.Error())
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}
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if lcf == nil {
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return "no compaction picked"
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}
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var builder strings.Builder
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builder.WriteString(fmt.Sprintf("compaction picked with stack depth reduction %d\n", lcf.seedIntervalStackDepthReduction))
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for i, file := range lcf.Files {
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builder.WriteString(file.FileNum.String())
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if i < len(lcf.Files)-1 {
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builder.WriteByte(',')
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}
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}
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startKey := sublevels.orderedIntervals[lcf.seedInterval].startKey
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endKey := sublevels.orderedIntervals[lcf.seedInterval+1].startKey
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builder.WriteString(fmt.Sprintf("\nseed interval: %s-%s\n", startKey.key, endKey.key))
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builder.WriteString(visualizeSublevels(sublevels, lcf.FilesIncluded, fileMetas[1:]))
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return builder.String()
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case "read-amp":
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return strconv.Itoa(sublevels.ReadAmplification())
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case "in-use-key-ranges":
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var buf bytes.Buffer
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for _, data := range strings.Split(strings.TrimSpace(td.Input), "\n") {
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keyRange := strings.Split(strings.TrimSpace(data), "-")
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smallest := []byte(strings.TrimSpace(keyRange[0]))
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largest := []byte(strings.TrimSpace(keyRange[1]))
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keyRanges := sublevels.InUseKeyRanges(smallest, largest)
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for i, r := range keyRanges {
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fmt.Fprintf(&buf, "%s-%s", sublevels.formatKey(r.Start), sublevels.formatKey(r.End))
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if i < len(keyRanges)-1 {
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fmt.Fprint(&buf, ", ")
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}
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}
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if len(keyRanges) == 0 {
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fmt.Fprint(&buf, ".")
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}
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fmt.Fprintln(&buf)
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}
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return buf.String()
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case "flush-split-keys":
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var builder strings.Builder
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builder.WriteString("flush user split keys: ")
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flushSplitKeys := sublevels.FlushSplitKeys()
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for i, key := range flushSplitKeys {
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builder.Write(key)
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if i < len(flushSplitKeys)-1 {
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builder.WriteString(", ")
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}
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}
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if len(flushSplitKeys) == 0 {
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builder.WriteString("none")
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}
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return builder.String()
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case "max-depth-after-ongoing-compactions":
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return strconv.Itoa(sublevels.MaxDepthAfterOngoingCompactions())
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case "l0-check-ordering":
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for sublevel, files := range sublevels.levelFiles {
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slice := NewLevelSliceSpecificOrder(files)
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err := CheckOrdering(base.DefaultComparer.Compare, base.DefaultFormatter,
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L0Sublevel(sublevel), slice.Iter(), ProhibitSplitUserKeys)
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if err != nil {
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return err.Error()
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}
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}
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return "OK"
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case "update-state-for-compaction":
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var fileNums []base.FileNum
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for _, arg := range td.CmdArgs {
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switch arg.Key {
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case "files":
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for _, val := range arg.Vals {
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fileNum, err := strconv.ParseUint(val, 10, 64)
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if err != nil {
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return err.Error()
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}
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fileNums = append(fileNums, base.FileNum(fileNum))
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}
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}
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}
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files := make([]*FileMetadata, 0, len(fileNums))
|
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for _, num := range fileNums {
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for _, f := range fileMetas[0] {
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if f.FileNum == num {
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f.CompactionState = CompactionStateCompacting
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files = append(files, f)
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break
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}
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}
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}
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slice := NewLevelSliceSeqSorted(files)
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sm, la := KeyRange(base.DefaultComparer.Compare, slice.Iter())
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activeCompactions = append(activeCompactions, L0Compaction{Smallest: sm, Largest: la})
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if err := sublevels.UpdateStateForStartedCompaction([]LevelSlice{slice}, true); err != nil {
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return err.Error()
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}
|
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return "OK"
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case "describe":
|
|
var builder strings.Builder
|
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builder.WriteString(sublevels.describe(true))
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builder.WriteString(visualizeSublevels(sublevels, nil, fileMetas[1:]))
|
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return builder.String()
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}
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return fmt.Sprintf("unrecognized command: %s", td.Cmd)
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})
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}
|
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|
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func TestAddL0FilesEquivalence(t *testing.T) {
|
|
seed := uint64(time.Now().UnixNano())
|
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rng := rand.New(rand.NewSource(seed))
|
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t.Logf("seed: %d", seed)
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|
|
var inUseKeys [][]byte
|
|
const keyReusePct = 0.15
|
|
var fileMetas []*FileMetadata
|
|
var s, s2 *L0Sublevels
|
|
keySpace := testkeys.Alpha(8)
|
|
|
|
flushSplitMaxBytes := rng.Int63n(1 << 20)
|
|
|
|
// The outer loop runs once for each version edit. The inner loop(s) run
|
|
// once for each file, or each file bound.
|
|
for i := 0; i < 100; i++ {
|
|
var filesToAdd []*FileMetadata
|
|
numFiles := 1 + rng.Intn(9)
|
|
keys := make([][]byte, 0, 2*numFiles)
|
|
for j := 0; j < 2*numFiles; j++ {
|
|
if rng.Float64() <= keyReusePct && len(inUseKeys) > 0 {
|
|
keys = append(keys, inUseKeys[rng.Intn(len(inUseKeys))])
|
|
} else {
|
|
newKey := testkeys.Key(keySpace, rng.Int63n(keySpace.Count()))
|
|
inUseKeys = append(inUseKeys, newKey)
|
|
keys = append(keys, newKey)
|
|
}
|
|
}
|
|
slices.SortFunc(keys, bytes.Compare)
|
|
for j := 0; j < numFiles; j++ {
|
|
startKey := keys[j*2]
|
|
endKey := keys[j*2+1]
|
|
if bytes.Equal(startKey, endKey) {
|
|
continue
|
|
}
|
|
meta := (&FileMetadata{
|
|
FileNum: base.FileNum(i*10 + j + 1),
|
|
Size: rng.Uint64n(1 << 20),
|
|
SmallestSeqNum: uint64(2*i + 1),
|
|
LargestSeqNum: uint64(2*i + 2),
|
|
}).ExtendPointKeyBounds(
|
|
base.DefaultComparer.Compare,
|
|
base.MakeInternalKey(startKey, uint64(2*i+1), base.InternalKeyKindSet),
|
|
base.MakeRangeDeleteSentinelKey(endKey),
|
|
)
|
|
meta.InitPhysicalBacking()
|
|
fileMetas = append(fileMetas, meta)
|
|
filesToAdd = append(filesToAdd, meta)
|
|
}
|
|
if len(filesToAdd) == 0 {
|
|
continue
|
|
}
|
|
|
|
levelMetadata := makeLevelMetadata(testkeys.Comparer.Compare, 0, fileMetas)
|
|
var err error
|
|
|
|
if s2 == nil {
|
|
s2, err = NewL0Sublevels(&levelMetadata, testkeys.Comparer.Compare, testkeys.Comparer.FormatKey, flushSplitMaxBytes)
|
|
require.NoError(t, err)
|
|
} else {
|
|
// AddL0Files relies on the indices in FileMetadatas pointing to that of
|
|
// the previous L0Sublevels. So it must be called before NewL0Sublevels;
|
|
// calling it the other way around results in out-of-bounds panics.
|
|
SortBySeqNum(filesToAdd)
|
|
s2, err = s2.AddL0Files(filesToAdd, flushSplitMaxBytes, &levelMetadata)
|
|
require.NoError(t, err)
|
|
}
|
|
|
|
s, err = NewL0Sublevels(&levelMetadata, testkeys.Comparer.Compare, testkeys.Comparer.FormatKey, flushSplitMaxBytes)
|
|
require.NoError(t, err)
|
|
|
|
// Check for equivalence.
|
|
require.Equal(t, s.flushSplitUserKeys, s2.flushSplitUserKeys)
|
|
require.Equal(t, s.orderedIntervals, s2.orderedIntervals)
|
|
require.Equal(t, s.levelFiles, s2.levelFiles)
|
|
}
|
|
}
|
|
|
|
func BenchmarkManifestApplyWithL0Sublevels(b *testing.B) {
|
|
b.ResetTimer()
|
|
for n := 0; n < b.N; n++ {
|
|
v, err := readManifest("testdata/MANIFEST_import")
|
|
require.NotNil(b, v)
|
|
require.NoError(b, err)
|
|
}
|
|
}
|
|
|
|
func BenchmarkL0SublevelsInit(b *testing.B) {
|
|
v, err := readManifest("testdata/MANIFEST_import")
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
b.ResetTimer()
|
|
for n := 0; n < b.N; n++ {
|
|
sl, err := NewL0Sublevels(&v.Levels[0],
|
|
base.DefaultComparer.Compare, base.DefaultFormatter, 5<<20)
|
|
require.NoError(b, err)
|
|
if sl == nil {
|
|
b.Fatal("expected non-nil L0Sublevels to be generated")
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkL0SublevelsInitAndPick(b *testing.B) {
|
|
v, err := readManifest("testdata/MANIFEST_import")
|
|
if err != nil {
|
|
b.Fatal(err)
|
|
}
|
|
b.ResetTimer()
|
|
for n := 0; n < b.N; n++ {
|
|
sl, err := NewL0Sublevels(&v.Levels[0],
|
|
base.DefaultComparer.Compare, base.DefaultFormatter, 5<<20)
|
|
require.NoError(b, err)
|
|
if sl == nil {
|
|
b.Fatal("expected non-nil L0Sublevels to be generated")
|
|
}
|
|
c, err := sl.PickBaseCompaction(2, LevelSlice{})
|
|
require.NoError(b, err)
|
|
if c == nil {
|
|
b.Fatal("expected non-nil compaction to be generated")
|
|
}
|
|
}
|
|
}
|