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https://issues.apache.org/jira/browse/HDFS-3421?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13276683#comment-13276683
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surendra singh lilhore commented on HDFS-3421:
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Hi harsh,
thanks for looking this issue.
Yes I do dfsadmin –refreshNodes and for testing i am using 0.24 version.
> ( Dynamic Rack Addition ) : After adding new Datanode in cluster not possible
> to change the rack of Datanode without restarts the Namenode.
> -------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: HDFS-3421
> URL: https://issues.apache.org/jira/browse/HDFS-3421
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: name-node
> Environment: One NameNode and three DataNodes each datanode in
> diffrent rack
> Reporter: surendra singh lilhore
>
> Scenario:
> I am using the script Mapping Technique for Dynamic Addition of rack.
> 1. Namenode is running with three
> datanode(xx.xx.xx.45,xx.xx.xx.91,xx.xx.xx.157)
> xx.xx.xx.45 : /datacenter1/rack1
> xx.xx.xx.91 : /datacenter1/rack2
> xx.xx.xx.157 :/datacenter1/rack3
> 2. Stop datanode xx.xx.xx.157.
> 3. change the rack of xx.xx.xx.157 to rack4 in Script file.
> 'xx.xx.xx.45' : '/datacenter1/rack1'
> 'xx.xx.xx.91' : '/datacenter1/rack2'
> 'xx.xx.xx.157' : '/datacenter1/rack4'
> 4. Start datanode xx.xx.xx.157.
> Expected Result : Datanode Should be add in rack4
> Actual Result : Datanode Added in old rack only (rack3).
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