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WBL loading: don't send empty buffers over chan (#12808) 

Signed-off-by: Shirley Leu <4163034+fridgepoet@users.noreply.github.com>
Co-authored-by: Fiona Liao <fiona.y.liao@gmail.com>
This commit is contained in:
Shirley 2023-09-12 16:26:02 +02:00 committed by GitHub
parent 6daee89e5f
commit d3a1044354
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 3 deletions
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10
tsdb/head_wal.go
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@ -749,7 +749,9 @@ func (h *Head) loadWBL(r *wlog.Reader, multiRef map[chunks.HeadSeriesRef]chunks.
m = len(samples)
}
for i := 0; i < concurrency; i++ {
shards[i] = processors[i].reuseBuf()
if shards[i] == nil {
shards[i] = processors[i].reuseBuf()
}
}
for _, sam := range samples[:m] {
if r, ok := multiRef[sam.Ref]; ok {
@ -759,7 +761,10 @@ func (h *Head) loadWBL(r *wlog.Reader, multiRef map[chunks.HeadSeriesRef]chunks.
shards[mod] = append(shards[mod], sam)
}
for i := 0; i < concurrency; i++ {
processors[i].input <- shards[i]
if len(shards[i]) > 0 {
processors[i].input <- shards[i]
shards[i] = nil
}
}
samples = samples[m:]
}
@ -881,7 +886,6 @@ func (wp *wblSubsetProcessor) reuseBuf() []record.RefSample {
// processWBLSamples adds the samples it receives to the head and passes
// the buffer received to an output channel for reuse.
// Samples before the minValidTime timestamp are discarded.
func (wp *wblSubsetProcessor) processWBLSamples(h *Head) (unknownRefs uint64) {
defer close(wp.output)