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Add guard against non-monotonic samples in series

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This can only happen due to data corruption.
This commit is contained in:
beorn7 2016-10-25 14:59:33 +02:00
parent 233a25a060
commit 876e5da4f8
1 changed files with 5 additions and 0 deletions
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5
storage/local/series.go
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@ -14,6 +14,7 @@
package local
import (
"fmt"
"sort"
"sync"
"time"
@ -496,6 +497,10 @@ func (s *memorySeries) preloadChunksForRange(
if throughIdx == len(s.chunkDescs) {
throughIdx--
}
if fromIdx > throughIdx {
// Guard against nonsensical result. The caller will quarantine the series with a meaningful log entry.
return nopIter, fmt.Errorf("fromIdx=%d is greater than throughIdx=%d, likely caused by data corruption", fromIdx, throughIdx)
}
pinIndexes := make([]int, 0, throughIdx-fromIdx+1)
for i := fromIdx; i <= throughIdx; i++ {