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Date: Fri, 24 Aug 2012 11:22:43 +1100 (NCT)
From: "Matt Foley (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
Message-ID: <155885759.8515.1345767763149.JavaMail.jiratomcat@arcas>
Subject: [jira] [Closed] (HDFS-978) Record every new block allocation of a
 file into the transaction log.
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     [ https://issues.apache.org/jira/browse/HDFS-978?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Foley closed HDFS-978.
---------------------------


Closing on release of 1.1.0.
                
> Record every new block allocation of a file into the transaction log.
> ---------------------------------------------------------------------
>
>                 Key: HDFS-978
>                 URL: https://issues.apache.org/jira/browse/HDFS-978
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>            Reporter: dhruba borthakur
>            Assignee: Todd Lipcon
>
> HDFS should record every new block allocation (of a file) into its transaction logs. In the current code, block allocations are persisted only when a file is closed or hflush-ed. This feature will enable HDFS writers to survive namenode restarts.

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