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Posted to issues@hbase.apache.org by "jeongmin kim (JIRA)" <ji...@apache.org> on 2015/04/15 08:14:58 UTC
[jira] [Created] (HBASE-13473) deleted cells come back alive after
the stripe compaction
jeongmin kim created HBASE-13473:
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Summary: deleted cells come back alive after the stripe compaction
Key: HBASE-13473
URL: https://issues.apache.org/jira/browse/HBASE-13473
Project: HBase
Issue Type: Bug
Components: Compaction
Affects Versions: 0.98.12, 2.0.0, 1.0.1, 1.1.0
Reporter: jeongmin kim
Priority: Blocker
Fix For: 2.0.0, 1.1.1, 0.98.13
during the STRIPE compaction,
deletes(tombstones) are being dropped in 2 cases.
1. Compaction including L0 (includeL0 == true)
2. L0 has no files (canDropDeletesWithoutL0 == true)
To drop delete marker and keep the consistency during compaction,
All of HFiles in the stripe has to be selected, just like major compaction.
otherwise, after the compaction only delete markers would be gone,
and deleted cells (which is in the not-selected HFiles) are going to be alive again.
In my cluster, there was no file on L0 and not all file selected for compaction, so some of delete rows have come back alive after delete.
I made a patch about it.
it checks if all files are selected before we set the majorRange of compaction request .
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