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From "Vinay (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5874) Should not compare DataNode current layout version with that of NameNode in DataStrorage
Date Tue, 04 Feb 2014 04:48:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13890376#comment-13890376
] 

Vinay commented on HDFS-5874:
-----------------------------

Thanks for filing this jira Brandon.

> Should not compare DataNode current layout version with that of NameNode in DataStrorage
> ----------------------------------------------------------------------------------------
>
>                 Key: HDFS-5874
>                 URL: https://issues.apache.org/jira/browse/HDFS-5874
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: namenode
>            Reporter: Brandon Li
>
> As [~vinayrpet] pointed out in HDFS-5754: in DataStorage DATANODE_LAYOUT_VERSION should
not compare with NameNode layout version anymore. 
> {noformat}
>       if (DataNodeLayoutVersion.supports(
>           LayoutVersion.Feature.FEDERATION,
>           HdfsConstants.DATANODE_LAYOUT_VERSION) && 
>           HdfsConstants.DATANODE_LAYOUT_VERSION == nsInfo.getLayoutVersion()) {
>         readProperties(sd, nsInfo.getLayoutVersion());
> {noformat}



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