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https://issues.apache.org/jira/browse/HBASE-27778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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chenglei updated HBASE-27778:
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Status: Patch Available (was: Open)
> Incorrect ReplicationSourceWALReader. totalBufferUsed may cause replication
> hang up
> ------------------------------------------------------------------------------------
>
> Key: HBASE-27778
> URL: https://issues.apache.org/jira/browse/HBASE-27778
> Project: HBase
> Issue Type: Bug
> Components: Replication
> Affects Versions: 3.0.0-alpha-3, 2.6.0
> Reporter: chenglei
> Assignee: chenglei
> Priority: Major
>
> When we read a new WAL Entry in
> {{ReplicationSourceWALReader.readWALEntries}}, we add
> {{ReplicationSourceWALReader.totalBufferUsed}} by the size of new entry in
> {{ReplicationSourceWALReader.addEntryToBatch}}, but the whole
> {{WALEntryBatch}} may not be put to the
> {{ReplicationSourceWALReader.entryBatchQueue}} because of exception(eg.
> exception thrown by {{WALEntryFilter.filter}} for following WAL Entry), and
> the {{ReplicationSourceWALReader.totalBufferUsed}} is not decreased in this
> case. Because the {{ReplicationSourceWALReader.totalBufferUsed}} is
> actually scoped to {{ReplicationSourceManager}}, after a long run,
> replication to all peers may hang up.
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