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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4280) [replication] ReplicationSink can deadlock itself via handlers
Date Mon, 19 Sep 2011 18:53:09 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4280?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13108053#comment-13108053
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Jean-Daniel Cryans commented on HBASE-4280:
-------------------------------------------

I opened 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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