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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5051) Propagate cache status information from the DataNode to the NameNode
Date Tue, 13 Aug 2013 20:50:48 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738808#comment-13738808
] 

Colin Patrick McCabe commented on HDFS-5051:
--------------------------------------------

+1
                
> Propagate cache status information from the DataNode to the NameNode
> --------------------------------------------------------------------
>
>                 Key: HDFS-5051
>                 URL: https://issues.apache.org/jira/browse/HDFS-5051
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>            Reporter: Colin Patrick McCabe
>            Assignee: Andrew Wang
>         Attachments: hdfs-5051-1.patch, hdfs-5051-2.patch
>
>
> The DataNode needs to inform the NameNode of its current cache state. Let's wire up the
RPCs and stub out the relevant methods on the DN and NN side.

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