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https://issues.apache.org/jira/browse/HBASE-13473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jeongmin kim updated HBASE-13473:
---------------------------------
Description:
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(canDropDeletesWithoutL0==true) and not
all files are selected for compaction, so some of deleted rows have come back
alive and appears when i get or scan after delete.
I made a patch about it.
it checks if all files are selected before we set the majorRange of compaction
request .
was:
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(canDropDeletesWithoutL0==true) and not
all file selected for compaction, so some of deleted rows have come back alive
and appears when i get or scan after delete.
I made a patch about it.
it checks if all files are selected before we set the majorRange of compaction
request .
> 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: 2.0.0, 1.0.1, 1.1.0, 0.98.12
> Reporter: jeongmin kim
> Priority: Blocker
> Labels: patch
> Attachments: HBASE-13473.patch
>
>
> 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(canDropDeletesWithoutL0==true) and not
> all files are selected for compaction, so some of deleted rows have come back
> alive and appears when i get or scan 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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