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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1492) DataNode version mismatch during handshake() causes NullPointerException.
Date Tue, 19 Jun 2007 05:04:26 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1492?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12506038
] 

Hadoop QA commented on HADOOP-1492:
-----------------------------------

Integrated in Hadoop-Nightly #127 (See [http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Nightly/127/])

> DataNode version mismatch during handshake() causes NullPointerException.
> -------------------------------------------------------------------------
>
>                 Key: HADOOP-1492
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1492
>             Project: Hadoop
>          Issue Type: Bug
>    Affects Versions: 0.13.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>             Fix For: 0.14.0
>
>         Attachments: NullRegistration.patch
>
>
> If during handshake() DataNode encounters version mismatch with the name-node it sends
errorReport()
> to the name-node with dnRegistration = null. This causes a NullPointerException on the
name-node.

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