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From "Aaron T. Myers (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2120) on reconnect, DN can connect to NN even with different source versions
Date Wed, 13 Jul 2011 21:45:02 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13064888#comment-13064888
] 

Aaron T. Myers commented on HDFS-2120:
--------------------------------------

Latest patch looks good to me. +1 pending Hudson results.

> on reconnect, DN can connect to NN even with different source versions
> ----------------------------------------------------------------------
>
>                 Key: HDFS-2120
>                 URL: https://issues.apache.org/jira/browse/HDFS-2120
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: John George
>            Assignee: John George
>         Attachments: HDFS-2120-2.patch, HDFS-2120-3.patch, HDFS-2120-4.patch, HDFS-2120.patch
>
>
> DN or NN does not check for source versions in cases when NN goes away or has lost connection.
The only check that is done by NN is for LAYOUT_VERSION and DN does not check for any version
mismatch. 

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