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

["Andrew Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-5049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Wang updated HDFS-5049:
------------------------------

    Attachment: hdfs-5049-1.patch

Here's a patch adding {{mlock}}, {{munlock}}, and {{getrlimit}} to {{NativeIO}} in common with tests. It also adds a datanode check on startup that tests if the ulimit is set correctly for the configured max locked memory size.

Let's try Jenkins since we shouldn't have diverged much.
                
> 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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