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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-2467) Concurrent flushers in HLog sync using HDFS-895
Date Mon, 06 Dec 2010 21:02:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans resolved HBASE-2467.
---------------------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Committed to the last patch to branch and trunk after running unit tests and doing some cluster
testing, thanks for the great work Todd!

> Concurrent flushers in HLog sync using HDFS-895
> -----------------------------------------------
>
>                 Key: HBASE-2467
>                 URL: https://issues.apache.org/jira/browse/HBASE-2467
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Blocker
>             Fix For: 0.90.0
>
>         Attachments: HBASE-2467-v2.patch, HBASE-2467-v3.patch, HBASE-2467-v4.patch, hbase-2467.txt
>
>
> HDFS-895 changes hflush() to be able to run concurrently from multiple threads, where
flushes can be concurrent with further writes to the same file.
> We need to rip out/amend the group commit code a bit to take advantage of this.

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