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https://issues.apache.org/jira/browse/HBASE-26675?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duo Zhang resolved HBASE-26675.
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Fix Version/s: 2.6.0
3.0.0-alpha-3
Hadoop Flags: Reviewed
Resolution: Fixed
Merged to master and branch-2.
Thanks [~sunxin] for reviewing!
> Data race on Compactor.writer
> -----------------------------
>
> Key: HBASE-26675
> URL: https://issues.apache.org/jira/browse/HBASE-26675
> Project: HBase
> Issue Type: Bug
> Components: Compaction
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 2.6.0, 3.0.0-alpha-3
>
>
> In Compactor.getCompactionTargets, we use synchronized on the writer instance
> but it does not help resolve the data race problem, because in other places
> we do not use synchronized...
> And since it is not a big deal to the upper layer an old snapshot, we could
> just make the writer instance volatile and use it directly in the method,
> just make sure we always use the same instance in the method, i.e, assign it
> to a local var first.
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