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https://issues.apache.org/jira/browse/HDFS-2004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13086824#comment-13086824
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Arun C Murthy commented on HDFS-2004:
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Jason, I'm not aware of anyone working on HDFS-2121 - it's just been a
long-term wish of mine for better MR applications. Would you like to take it
over and work on? Thanks.
> Enable replicating and pinning files to a data node
> ---------------------------------------------------
>
> Key: HDFS-2004
> URL: https://issues.apache.org/jira/browse/HDFS-2004
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: balancer
> Affects Versions: 0.23.0
> Reporter: Jason Rutherglen
>
> Some HDFS applications require that a given file is on the local DataNode.
> The functionality created here will allow pinning the file to any DataNode.
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