zhuobin zheng created HBASE-27464:
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Summary: In memory compaction 'COMPACT' may cause data mass when
add cell bigger than maxAlloc(default 256k) size.
Key: HBASE-27464
URL: https://issues.apache.org/jira/browse/HBASE-27464
Project: HBase
Issue Type: Bug
Components: in-memory-compaction
Reporter: zhuobin zheng
Attachments: image-2022-11-04-15-46-21-645.png
When init 'CellChunkImmutableSegment' for 'COMPACT' action, we not force copy
to current MSLab.
When cell size bigger than maxAlloc, cell will stay in previous chunk which
will recycle after segment replace, and we may read wrong data when these chunk
reused by others.
!image-2022-11-04-15-46-21-645.png!
Timeline:
# add a cell 'A' bigger than 256K
# cell 'A' will copy to a chunk 'A' when first compact
# cell 'A' will retain in chunk 'A' when second compact
# chunk 'A' recycled after segment swap and close
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