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https://issues.apache.org/jira/browse/HBASE-4391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13400158#comment-13400158
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Matteo Bertozzi commented on HBASE-4391:
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{quote}compile.sh isn't in repo. Please update release notes on how this
feature is compiled and used.{quote}
Do you mean in the patch? or todd's repo?
The attached patch has a new "native" profile added, that allows to compile the
mlock_agent, and if you in your HBASE_HOME/ you've a native/ folder that
contains the .so and if you specify the --mlock <ARG> options it checks if
native/libmlock_agent.so is available or not.
> Add ability to start RS as root and call mlockall
> -------------------------------------------------
>
> Key: HBASE-4391
> URL: https://issues.apache.org/jira/browse/HBASE-4391
> Project: HBase
> Issue Type: New Feature
> Components: regionserver
> Affects Versions: 0.94.0
> Reporter: Todd Lipcon
> Assignee: Matteo Bertozzi
> Fix For: 0.96.0
>
> Attachments: HBASE-4391-v0.patch, HBASE-4391-v1.patch,
> HBASE-4391-v2.patch
>
>
> A common issue we've seen in practice is that users oversubscribe their
> region servers with too many MR tasks, etc. As soon as the machine starts
> swapping, the RS grinds to a halt, loses ZK session, aborts, etc.
> This can be combatted by starting the RS as root, calling mlockall(), and
> then setuid down to the hbase user. We should not require this, but we should
> provide it as an option.
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