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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-1939) HLog group commit
Date Wed, 28 Oct 2009 18:55:59 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1939?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans updated HBASE-1939:
--------------------------------------

    Attachment: HBASE-1939-v2.patch

Second version of the patch against current trunk with Raghu's comments.

So I changed the condition so that it really sets to force if force == true and forceSync
== false. In all the other cases it should stay to current value and hsync resets to false
if the value was set to true. I also cleaned a LOG which has an unnecessary stack trace and
removed now un-thrown exceptions.

> HLog group commit
> -----------------
>
>                 Key: HBASE-1939
>                 URL: https://issues.apache.org/jira/browse/HBASE-1939
>             Project: Hadoop HBase
>          Issue Type: New Feature
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.21.0
>
>         Attachments: HBASE-1939-v2.patch, HBASE-1939.patch
>
>
> Currently multiple clients writing to a RS are serialized when sync'ing their appends.
Implementing group commit can help this by being aware of all the clients in that queue.

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