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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3859) QJM: implement md5sum verification
Date Fri, 14 Sep 2012 23:46:08 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13456233#comment-13456233
] 

Aaron T. Myers commented on HDFS-3859:
--------------------------------------

+1, the patch looks good to me. Good work, Todd.
                
> QJM: implement md5sum verification
> ----------------------------------
>
>                 Key: HDFS-3859
>                 URL: https://issues.apache.org/jira/browse/HDFS-3859
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>    Affects Versions: QuorumJournalManager (HDFS-3077)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>         Attachments: hdfs-3859-sha1.txt, hdfs-3859.txt
>
>
> When the QJM passes journal segments between nodes, it should use an md5sum field to
make sure the data doesn't get corrupted during transit. This also serves as an extra safe-guard
to make sure that the data is consistent across all nodes when finalizing a segment.

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