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Fixes unlocked read from logBuffer.LastTsNs that is racey. (#5536)

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M@ 2024-04-25 18:46:12 -04:00 committed by GitHub
parent 855607c536
commit abf01a0eb7
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1 changed files with 9 additions and 1 deletions
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10
weed/util/log_buffer/log_read.go
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@ -66,9 +66,17 @@ func (logBuffer *LogBuffer) LoopProcessLogData(readerName string, startPosition
isDone = true
return
}
logBuffer.RLock()
lastTsNs := logBuffer.LastTsNs
for lastTsNs == logBuffer.LastTsNs {
logBuffer.RUnlock()
loopTsNs := lastTsNs // make a copy
for lastTsNs == loopTsNs {
if waitForDataFn() {
// Update loopTsNs and loop again
logBuffer.RLock()
loopTsNs = logBuffer.LastTsNs
logBuffer.RUnlock()
continue
} else {
isDone = true