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Posted to hdfs-issues@hadoop.apache.org by "Brandon Li (JIRA)" <ji...@apache.org> on 2013/08/07 16:58:48 UTC

[jira] [Commented] (HDFS-5049) Add JNI mlock support

    [ https://issues.apache.org/jira/browse/HDFS-5049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13732076#comment-13732076 ] 

Brandon Li commented on HDFS-5049:
----------------------------------

If the file is memory mapped by JAVA API(FileChannel.map), how to get the virtual memory address to be used by mlock/munlock?
                
> 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
>
> Add support for {{mlock}} and {{munlock}}, for use in caching.

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