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https://issues.apache.org/jira/browse/HBASE-28114?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duo Zhang resolved HBASE-28114.
-------------------------------
Hadoop Flags: Reviewed
Resolution: Fixed
Finally pushed to branch-2+.
Thanks [~Xiaolin Ha] for reviewing!
> Add more comments to explain why replication log queue could never be empty
> for normal replication queue
> --------------------------------------------------------------------------------------------------------
>
> Key: HBASE-28114
> URL: https://issues.apache.org/jira/browse/HBASE-28114
> Project: HBase
> Issue Type: Bug
> Components: Replication
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 2.6.0, 3.0.0-beta-1
>
>
> In HBASE-28037, [~Xiaolin Ha] found that there could be a very small window
> that even for a normal replication source, its queue could be empty.
> This is because we will only enqueue the wal file to the queue in
> postLogRoll, where the old WAL writer has already been closed, so if the
> replication is fast enough, we could reach the end of the queue before
> enqueuing the new wal file.
> The code for branch-2+ has been refactored a lot so we opened a new issue for
> fixing this.
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