[
https://issues.apache.org/jira/browse/HBASE-4391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13290307#comment-13290307
]
Matteo Bertozzi commented on HBASE-4391:
----------------------------------------
todd's code looks good to me.
One way to avoid using root to start the RS is adding hbase user to
/etc/security/limits.d/
{code}echo "$USER - memlock $MAX_MEMLOCK_SIZE"
>/etc/security/limits.d/$USER.conf{code}
If this will be integrated in hbase, do you want to force everyone to use root
or add hbase user in limits.d to start RS? or we can add some --no-swap flag to
region server start script?
> 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: Todd Lipcon
> Fix For: 0.96.0
>
>
> 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.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators:
https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira
