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https://issues.apache.org/jira/browse/HDFS-5053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738257#comment-13738257
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Suresh Srinivas commented on HDFS-5053:
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Colin, is the summary correct? Do you really mean NameNode should invoke
Datanode mlock API? mlock is a detail on how the cache is implemented in the
datanode. So the right summary would be "Namenode interaction with datanode to
cache replicas"? This is essentially done by sending list of block Ids that
need to be cached at the datanode, right?
> NameNode should invoke DataNode mlock APIs to coordinate caching
> ----------------------------------------------------------------
>
> Key: HDFS-5053
> URL: https://issues.apache.org/jira/browse/HDFS-5053
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Colin Patrick McCabe
>
> The NameNode should invoke the DataNode mlock APIs to coordinate caching.
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