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https://issues.apache.org/jira/browse/HBASE-24316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Huaxiang Sun resolved HBASE-24316.
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Fix Version/s: 2.4.0
2.3.0
3.0.0-alpha-1
Resolution: Fixed
> GCMulitpleMergedRegionsProcedure is not idempotent
> ---------------------------------------------------
>
> Key: HBASE-24316
> URL: https://issues.apache.org/jira/browse/HBASE-24316
> Project: HBase
> Issue Type: Bug
> Components: proc-v2
> Affects Versions: 3.0.0-alpha-1, 2.3.0, 2.4.0
> Reporter: Huaxiang Sun
> Assignee: Huaxiang Sun
> Priority: Major
> Fix For: 3.0.0-alpha-1, 2.3.0, 2.4.0
>
>
> Currently deleteMergeQualifiers() is not idempotent. If two
> GCMulitpleMergedRegionsProcedures are run for the same merged child region,
> the second run will delete the row for the merge region from meta table and
> leave a hole. It needs to make sure it only deletes columns with merge
> qualifiers.
> [https://github.com/apache/hbase/blob/master/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java#L1849]
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