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lib/storage: optimization: do not scan block for rows outside retention if it is covered by the retention

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This commit is contained in:
Aliaksandr Valialkin 2022-12-03 22:14:12 -08:00
parent fd9d0a550b
commit 233301a549
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1 changed files with 4 additions and 0 deletions
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4
lib/storage/merge.go
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@ -178,6 +178,10 @@ func mergeBlocks(ob, ib1, ib2 *Block, retentionDeadline int64, rowsDeleted *uint
}
func skipSamplesOutsideRetention(b *Block, retentionDeadline int64, rowsDeleted *uint64) {
if b.bh.MinTimestamp >= retentionDeadline {
// Fast path - the block contains only samples with timestamps bigger than retentionDeadline.
return
}
timestamps := b.timestamps
nextIdx := b.nextIdx
nextIdxOrig := nextIdx