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From "Arpit Agarwal (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-5024) Make createCommitBlockSynchronization idempotent
Date Wed, 24 Jul 2013 19:17:51 GMT

     [ https://issues.apache.org/jira/browse/HDFS-5024?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Arpit Agarwal updated HDFS-5024:

    Attachment: HDFS-5024.005.patch

Updated the patch to remove protocol changes based on further discussion with Jing.
> Make createCommitBlockSynchronization idempotent
> ------------------------------------------------
>                 Key: HDFS-5024
>                 URL: https://issues.apache.org/jira/browse/HDFS-5024
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0, 2.1.0-beta
>            Reporter: Arpit Agarwal
>            Assignee: Arpit Agarwal
>         Attachments: HDFS-5024.001.patch, HDFS-5024.002.patch, HDFS-5024.003.patch, HDFS-5024.004.patch,
> commitBlockSynchronization is not idempotent (repeated invocations with the same arguments
will throw an exception). By making it Idempotent we can remove the requirement to track invocations
using the retry cache.

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