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https://issues.apache.org/jira/browse/HDFS-5050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13747812#comment-13747812
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Andrew Wang commented on HDFS-5050:
-----------------------------------
I forgot to handle "uncache on delete/move" and the "only cache finalized
replicas" checks. I'll work on adding those in, but I think it's still worth
reviewing the v1 patch.
> 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
>
>
> 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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