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add batch index for each memory buffer

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This commit is contained in:
chrislu
2024-01-08 00:03:08 -08:00
parent d0d24f1e40
commit 49428a303b
14 changed files with 753 additions and 584 deletions
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200
weed/util/log_buffer/log_buffer.go
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@@ -26,6 +26,7 @@ type LogBuffer struct {
name string
prevBuffers *SealedBuffers
buf []byte
batchIndex int64
idx []int
pos int
startTime time.Time
@@ -58,17 +59,17 @@ func NewLogBuffer(name string, flushInterval time.Duration, flushFn func(startTi
return lb
}
func (m *LogBuffer) AddToBuffer(partitionKey, data []byte, processingTsNs int64) {
func (logBuffer *LogBuffer) AddToBuffer(partitionKey, data []byte, processingTsNs int64) {
var toFlush *dataToFlush
m.Lock()
logBuffer.Lock()
defer func() {
m.Unlock()
logBuffer.Unlock()
if toFlush != nil {
m.flushChan <- toFlush
logBuffer.flushChan <- toFlush
}
if m.notifyFn != nil {
m.notifyFn()
if logBuffer.notifyFn != nil {
logBuffer.notifyFn()
}
}()
@@ -80,12 +81,12 @@ func (m *LogBuffer) AddToBuffer(partitionKey, data []byte, processingTsNs int64)
} else {
ts = time.Unix(0, processingTsNs)
}
if m.lastTsNs >= processingTsNs {
if logBuffer.lastTsNs >= processingTsNs {
// this is unlikely to happen, but just in case
processingTsNs = m.lastTsNs + 1
processingTsNs = logBuffer.lastTsNs + 1
ts = time.Unix(0, processingTsNs)
}
m.lastTsNs = processingTsNs
logBuffer.lastTsNs = processingTsNs
logEntry := &filer_pb.LogEntry{
TsNs: processingTsNs,
PartitionKeyHash: util.HashToInt32(partitionKey),
@@ -96,108 +97,119 @@ func (m *LogBuffer) AddToBuffer(partitionKey, data []byte, processingTsNs int64)
size := len(logEntryData)
if m.pos == 0 {
m.startTime = ts
if logBuffer.pos == 0 {
logBuffer.startTime = ts
}
if m.startTime.Add(m.flushInterval).Before(ts) || len(m.buf)-m.pos < size+4 {
// glog.V(4).Infof("%s copyToFlush1 start time %v, ts %v, remaining %d bytes", m.name, m.startTime, ts, len(m.buf)-m.pos)
toFlush = m.copyToFlush()
m.startTime = ts
if len(m.buf) < size+4 {
m.buf = make([]byte, 2*size+4)
if logBuffer.startTime.Add(logBuffer.flushInterval).Before(ts) || len(logBuffer.buf)-logBuffer.pos < size+4 {
glog.V(0).Infof("%s copyToFlush1 batch:%d start time %v, ts %v, remaining %d bytes", logBuffer.name, logBuffer.batchIndex, logBuffer.startTime, ts, len(logBuffer.buf)-logBuffer.pos)
toFlush = logBuffer.copyToFlush()
logBuffer.startTime = ts
if len(logBuffer.buf) < size+4 {
logBuffer.buf = make([]byte, 2*size+4)
}
}
m.stopTime = ts
logBuffer.stopTime = ts
m.idx = append(m.idx, m.pos)
util.Uint32toBytes(m.sizeBuf, uint32(size))
copy(m.buf[m.pos:m.pos+4], m.sizeBuf)
copy(m.buf[m.pos+4:m.pos+4+size], logEntryData)
m.pos += size + 4
logBuffer.idx = append(logBuffer.idx, logBuffer.pos)
util.Uint32toBytes(logBuffer.sizeBuf, uint32(size))
copy(logBuffer.buf[logBuffer.pos:logBuffer.pos+4], logBuffer.sizeBuf)
copy(logBuffer.buf[logBuffer.pos+4:logBuffer.pos+4+size], logEntryData)
logBuffer.pos += size + 4
// fmt.Printf("partitionKey %v entry size %d total %d count %d\n", string(partitionKey), size, m.pos, len(m.idx))
}
func (m *LogBuffer) IsStopping() bool {
return m.isStopping.Load()
func (logBuffer *LogBuffer) IsStopping() bool {
return logBuffer.isStopping.Load()
}
func (m *LogBuffer) Shutdown() {
isAlreadyStopped := m.isStopping.Swap(true)
func (logBuffer *LogBuffer) Shutdown() {
isAlreadyStopped := logBuffer.isStopping.Swap(true)
if isAlreadyStopped {
return
}
toFlush := m.copyToFlush()
m.flushChan <- toFlush
close(m.flushChan)
toFlush := logBuffer.copyToFlush()
logBuffer.flushChan <- toFlush
close(logBuffer.flushChan)
}
func (m *LogBuffer) loopFlush() {
for d := range m.flushChan {
func (logBuffer *LogBuffer) loopFlush() {
for d := range logBuffer.flushChan {
if d != nil {
// glog.V(4).Infof("%s flush [%v, %v] size %d", m.name, d.startTime, d.stopTime, len(d.data.Bytes()))
m.flushFn(d.startTime, d.stopTime, d.data.Bytes())
logBuffer.flushFn(d.startTime, d.stopTime, d.data.Bytes())
d.releaseMemory()
// local logbuffer is different from aggregate logbuffer here
m.lastFlushTime = d.stopTime
logBuffer.lastFlushTime = d.stopTime
}
}
}
func (m *LogBuffer) loopInterval() {
for !m.IsStopping() {
time.Sleep(m.flushInterval)
if m.IsStopping() {
func (logBuffer *LogBuffer) loopInterval() {
for !logBuffer.IsStopping() {
time.Sleep(logBuffer.flushInterval)
if logBuffer.IsStopping() {
return
}
m.Lock()
toFlush := m.copyToFlush()
m.Unlock()
logBuffer.Lock()
toFlush := logBuffer.copyToFlush()
logBuffer.Unlock()
if toFlush != nil {
glog.V(0).Infof("%s flush [%v, %v] size %d", m.name, toFlush.startTime, toFlush.stopTime, len(toFlush.data.Bytes()))
m.flushChan <- toFlush
glog.V(0).Infof("%s flush [%v, %v] size %d", logBuffer.name, toFlush.startTime, toFlush.stopTime, len(toFlush.data.Bytes()))
logBuffer.flushChan <- toFlush
} else {
// glog.V(0).Infof("%s no flush", m.name)
}
}
}
func (m *LogBuffer) copyToFlush() *dataToFlush {
func (logBuffer *LogBuffer) copyToFlush() *dataToFlush {
if m.pos > 0 {
if logBuffer.pos > 0 {
// fmt.Printf("flush buffer %d pos %d empty space %d\n", len(m.buf), m.pos, len(m.buf)-m.pos)
var d *dataToFlush
if m.flushFn != nil {
if logBuffer.flushFn != nil {
d = &dataToFlush{
startTime: m.startTime,
stopTime: m.stopTime,
data: copiedBytes(m.buf[:m.pos]),
startTime: logBuffer.startTime,
stopTime: logBuffer.stopTime,
data: copiedBytes(logBuffer.buf[:logBuffer.pos]),
}
// glog.V(4).Infof("%s flushing [0,%d) with %d entries [%v, %v]", m.name, m.pos, len(m.idx), m.startTime, m.stopTime)
} else {
// glog.V(4).Infof("%s removed from memory [0,%d) with %d entries [%v, %v]", m.name, m.pos, len(m.idx), m.startTime, m.stopTime)
m.lastFlushTime = m.stopTime
logBuffer.lastFlushTime = logBuffer.stopTime
}
m.buf = m.prevBuffers.SealBuffer(m.startTime, m.stopTime, m.buf, m.pos)
m.startTime = time.Unix(0, 0)
m.stopTime = time.Unix(0, 0)
m.pos = 0
m.idx = m.idx[:0]
logBuffer.buf = logBuffer.prevBuffers.SealBuffer(logBuffer.startTime, logBuffer.stopTime, logBuffer.buf, logBuffer.pos, logBuffer.batchIndex)
logBuffer.startTime = time.Unix(0, 0)
logBuffer.stopTime = time.Unix(0, 0)
logBuffer.pos = 0
logBuffer.idx = logBuffer.idx[:0]
logBuffer.batchIndex++
return d
}
return nil
}
func (logBuffer *LogBuffer) GetEarliestTime() time.Time{
return logBuffer.startTime
}
func (logBuffer *LogBuffer) GetEarliestPosition() MessagePosition{
return MessagePosition{
Time: logBuffer.startTime,
BatchIndex: logBuffer.batchIndex,
}
}
func (d *dataToFlush) releaseMemory() {
d.data.Reset()
bufferPool.Put(d.data)
}
func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (bufferCopy *bytes.Buffer, err error) {
m.RLock()
defer m.RUnlock()
func (logBuffer *LogBuffer) ReadFromBuffer(lastReadPosition MessagePosition, inMemoryOnly bool) (bufferCopy *bytes.Buffer, batchIndex int64, err error) {
logBuffer.RLock()
defer logBuffer.RUnlock()
// Read from disk and memory
// 1. read from disk, last time is = td
@@ -209,52 +221,61 @@ func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (bufferCopy *bytes.Bu
// if td < tm, case 2.3
// read from disk again
var tsMemory time.Time
if !m.startTime.IsZero() {
tsMemory = m.startTime
var tsBatchIndex int64
if !logBuffer.startTime.IsZero() {
tsMemory = logBuffer.startTime
tsBatchIndex = logBuffer.batchIndex
}
for _, prevBuf := range m.prevBuffers.buffers {
for _, prevBuf := range logBuffer.prevBuffers.buffers {
if !prevBuf.startTime.IsZero() && prevBuf.startTime.Before(tsMemory) {
tsMemory = prevBuf.startTime
tsBatchIndex = prevBuf.batchIndex
}
}
if tsMemory.IsZero() { // case 2.2
return nil, nil
} else if lastReadTime.Before(tsMemory) { // case 2.3
if !m.lastFlushTime.IsZero() {
glog.V(0).Infof("resume with last flush time: %v", m.lastFlushTime)
return nil, ResumeFromDiskError
println("2.2 no data")
return nil, -2,nil
} else if lastReadPosition.Before(tsMemory) && lastReadPosition.BatchIndex +1 < tsBatchIndex { // case 2.3
if inMemoryOnly {
println("2.3 no data", lastReadPosition.BatchIndex, tsBatchIndex)
// FIXME: this is wrong: the data has been flushed to disk already
return nil, tsBatchIndex,nil
}
if !logBuffer.lastFlushTime.IsZero() {
glog.V(0).Infof("resume with last flush time: %v", logBuffer.lastFlushTime)
return nil, -2, ResumeFromDiskError
}
}
// the following is case 2.1
if lastReadTime.Equal(m.stopTime) {
return nil, nil
if lastReadPosition.Equal(logBuffer.stopTime) {
return nil, logBuffer.batchIndex, nil
}
if lastReadTime.After(m.stopTime) {
// glog.Fatalf("unexpected last read time %v, older than latest %v", lastReadTime, m.stopTime)
return nil, nil
if lastReadPosition.After(logBuffer.stopTime) {
// glog.Fatalf("unexpected last read time %v, older than latest %v", lastReadPosition, m.stopTime)
return nil, logBuffer.batchIndex, nil
}
if lastReadTime.Before(m.startTime) {
// println("checking ", lastReadTime.UnixNano())
for _, buf := range m.prevBuffers.buffers {
if buf.startTime.After(lastReadTime) {
if lastReadPosition.Before(logBuffer.startTime) {
// println("checking ", lastReadPosition.UnixNano())
for _, buf := range logBuffer.prevBuffers.buffers {
if buf.startTime.After(lastReadPosition.Time) {
// glog.V(4).Infof("%s return the %d sealed buffer %v", m.name, i, buf.startTime)
// println("return the", i, "th in memory", buf.startTime.UnixNano())
return copiedBytes(buf.buf[:buf.size]), nil
return copiedBytes(buf.buf[:buf.size]), buf.batchIndex, nil
}
if !buf.startTime.After(lastReadTime) && buf.stopTime.After(lastReadTime) {
pos := buf.locateByTs(lastReadTime)
if !buf.startTime.After(lastReadPosition.Time) && buf.stopTime.After(lastReadPosition.Time) {
pos := buf.locateByTs(lastReadPosition.Time)
// fmt.Printf("locate buffer[%d] pos %d\n", i, pos)
return copiedBytes(buf.buf[pos:buf.size]), nil
return copiedBytes(buf.buf[pos:buf.size]), buf.batchIndex, nil
}
}
// glog.V(4).Infof("%s return the current buf %v", m.name, lastReadTime)
return copiedBytes(m.buf[:m.pos]), nil
// glog.V(4).Infof("%s return the current buf %v", m.name, lastReadPosition)
return copiedBytes(logBuffer.buf[:logBuffer.pos]), logBuffer.batchIndex,nil
}
lastTs := lastReadTime.UnixNano()
l, h := 0, len(m.idx)-1
lastTs := lastReadPosition.UnixNano()
l, h := 0, len(logBuffer.idx)-1
/*
for i, pos := range m.idx {
@@ -272,18 +293,18 @@ func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (bufferCopy *bytes.Bu
for l <= h {
mid := (l + h) / 2
pos := m.idx[mid]
_, t := readTs(m.buf, pos)
pos := logBuffer.idx[mid]
_, t := readTs(logBuffer.buf, pos)
if t <= lastTs {
l = mid + 1
} else if lastTs < t {
var prevT int64
if mid > 0 {
_, prevT = readTs(m.buf, m.idx[mid-1])
_, prevT = readTs(logBuffer.buf, logBuffer.idx[mid-1])
}
if prevT <= lastTs {
// fmt.Printf("found l=%d, m-1=%d(ts=%d), m=%d(ts=%d), h=%d [%d, %d) \n", l, mid-1, prevT, mid, t, h, pos, m.pos)
return copiedBytes(m.buf[pos:m.pos]), nil
return copiedBytes(logBuffer.buf[pos:logBuffer.pos]), logBuffer.batchIndex, nil
}
h = mid
}
@@ -291,10 +312,11 @@ func (m *LogBuffer) ReadFromBuffer(lastReadTime time.Time) (bufferCopy *bytes.Bu
}
// FIXME: this could be that the buffer has been flushed already
return nil, nil
println("Not sure why no data", lastReadPosition.BatchIndex, tsBatchIndex)
return nil, -2, nil
}
func (m *LogBuffer) ReleaseMemory(b *bytes.Buffer) {
func (logBuffer *LogBuffer) ReleaseMemory(b *bytes.Buffer) {
bufferPool.Put(b)
}