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https://issues.apache.org/jira/browse/HBASE-4280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13113540#comment-13113540
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stack commented on HBASE-4280:
------------------------------
Ok. +1 on this patch for 0.90 (and for 0.92 till we do hbase-4441)
> [replication] ReplicationSink can deadlock itself via handlers
> --------------------------------------------------------------
>
> Key: HBASE-4280
> URL: https://issues.apache.org/jira/browse/HBASE-4280
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 0.90.4
> Reporter: Jean-Daniel Cryans
> Assignee: Jean-Daniel Cryans
> Fix For: 0.90.5
>
> Attachments: HBASE-4280-0.90.patch
>
>
> I've experienced this problem a few times, ReplicationSink calls are received
> through the normal handlers and potentially can call itself which, in certain
> situations, call fill up all the handlers. For example, 10 handlers that are
> all replication calls are all trying to talk to the local server at the same
> time.
> HRS.replicateLogEntries should have @QosPriority(priority=HIGH_QOS) to use
> the other set of handlers.
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