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Posted to common-dev@hadoop.apache.org by "Konstantin Shvachko (JIRA)" <ji...@apache.org> on 2007/06/14 03:09:25 UTC

[jira] Updated: (HADOOP-1492) DataNode version mismatch during handshake() causes NullPointerException.

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

Konstantin Shvachko updated HADOOP-1492:
----------------------------------------

    Attachment: NullRegistration.patch

This patch sends a non-empty dnRegistration so that the name-node could correctly log the data-node name with a wrong build version.


> 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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