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lib/mergeset: verify that the index block for in-memory part doesnt exceed the 3*maxIndexBlockSize

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Aliaksandr Valialkin 2024-02-08 13:50:14 +02:00
parent 077f84964a
commit 93ada2eaaf
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1 changed files with 5 additions and 0 deletions
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5
lib/mergeset/inmemory_part.go
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@ -6,6 +6,7 @@ import (
"github.com/VictoriaMetrics/VictoriaMetrics/lib/bytesutil"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/encoding"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/fs"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
)
type inmemoryPart struct {
@ -84,6 +85,10 @@ func (mp *inmemoryPart) Init(ib *inmemoryBlock) {
bb := inmemoryPartBytePool.Get()
bb.B = mp.bh.Marshal(bb.B[:0])
if len(bb.B) > 3*maxIndexBlockSize {
// marshaled blockHeader can exceed indexBlockSize when firstItem and commonPrefix sizes are close to indexBlockSize
logger.Panicf("BUG: too big index block: %d bytes; mustn't exceed %d bytes", len(bb.B), 3*maxIndexBlockSize)
}
mp.indexData.B = encoding.CompressZSTDLevel(mp.indexData.B[:0], bb.B, compressLevel)
mp.mr.firstItem = append(mp.mr.firstItem[:0], mp.bh.firstItem...)