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https://issues.apache.org/jira/browse/HDFS-5050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13749270#comment-13749270
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Colin Patrick McCabe commented on HDFS-5050:
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thanks, Andrew.
+1. will commit to the branch shortly if there are no more comments
> Add DataNode support for mlock and munlock
> ------------------------------------------
>
> Key: HDFS-5050
> URL: https://issues.apache.org/jira/browse/HDFS-5050
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Colin Patrick McCabe
> Assignee: Andrew Wang
> Attachments: hdfs-5050-1.patch, hdfs-5050-2.patch, hdfs-5050-3.patch
>
>
> Add DataNode support for mlock and munlock. The DataNodes should respond to
> RPCs telling them to mlock and munlock blocks. Blocks should be uncached
> when the NameNode asks for them to be moved or deleted. For now, we should
> cache only completed blocks.
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