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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-5049) Add JNI mlock support
Date Fri, 13 Sep 2013 20:29:52 GMT

    [ https://issues.apache.org/jira/browse/HDFS-5049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13766904#comment-13766904

Chris Nauroth commented on HDFS-5049:

bq. I think it probably makes sense to just add a long NativeIO#getMemlockLimit function,
and let the JNI layer take care of the details.

+1 for the proposal.

bq. I'll file a follow-up JIRA for this in a moment... or perhaps I should file two follow-up
JIRAs, one for Windows support?

I think 2 separate issues makes sense.  It will be easier to code review each change in isolation.
> Add JNI mlock support
> ---------------------
>                 Key: HDFS-5049
>                 URL: https://issues.apache.org/jira/browse/HDFS-5049
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, namenode
>            Reporter: Colin Patrick McCabe
>            Assignee: Andrew Wang
>         Attachments: hdfs-5049-1.patch
> Add support for {{mlock}} and {{munlock}}, for use in caching.

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