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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HADOOP-8365) Add flag to disable durable sync
Date Wed, 11 Jul 2012 23:09:35 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8365?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas resolved HADOOP-8365.
-------------------------------------

      Resolution: Fixed
    Release Note: This patch enables durable sync by default. Installation where HBase was
not used, that used to run without setting {{dfs.support.append}} or setting it to false in
the configurate, must set {{dfs.durable.sync}} to false to preserve the previous semantics.
    Hadoop Flags: Incompatible change,Reviewed  (was: Reviewed)
    
> Add flag to disable durable sync
> --------------------------------
>
>                 Key: HADOOP-8365
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8365
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 1.1.0
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>            Priority: Blocker
>             Fix For: 1.1.0
>
>         Attachments: hadoop-8365.txt, hadoop-8365.txt
>
>
> Per HADOOP-8230 there's a request for a flag to disable the sync code paths that dfs.support.append
used to enable. The sync method itself will still be available and have a broken implementation
as that was the behavior before HADOOP-8230. This config flag should default to false as the
primary motivation for HADOOP-8230 is so HBase works out-of-the-box with Hadoop 1.1.

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