[
https://issues.apache.org/jira/browse/HBASE-6567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
stack updated HBASE-6567:
-------------------------
Resolution: Fixed
Release Note:
Removes --mlock start flag. Adds the below instead:
HBASE_REGIONSERVER_MLOCK binary: empty/not set – disabled, non empty – enabled
HBASE_REGIONSERVER_UID string: a target user for the running process regardless
of any other feature that is enabled
Hadoop Flags: Incompatible change,Reviewed
Status: Resolved (was: Patch Available)
Committed to trunk. Nice one lads. Thanks.
> make memory locking configuration of regioservers more flexible
> ---------------------------------------------------------------
>
> Key: HBASE-6567
> URL: https://issues.apache.org/jira/browse/HBASE-6567
> Project: HBase
> Issue Type: Improvement
> Components: scripts
> Affects Versions: 0.96.0
> Reporter: Roman Shaposhnik
> Assignee: Matteo Bertozzi
> Fix For: 0.96.0
>
> Attachments: HBASE-6567-v0.patch
>
>
> The current implementation of the memory locking feature of regisoservers has
> a downside of not being flexible to configure for permanent use. Sure there
> is a --mlock flag but that needs to be explicitly passed on every invocation
> and thus require extra steps to be configured for permanent use (IOW, there's
> not a single env variable I can set to have a desired effect). The only other
> alternative -- the explicit setting of HBASE_REGIONSERVER_OPTS -- has a
> downside of being pretty cryptic to the novice user and has a killer problem
> of not explicitly telling higher level scripts (like init.d or upstart ones)
> which user the initial hbase process should be executed as.
> I propose a very simple solution (which is essentially making --mlock setting
> into an env. variable): add a variable called HBASE_REGIONSERVER_MLOCK that
> can be set in hbase-env.sh and has the following semantics:
> * [default] not set: mlocking feature is disabled
> * set but empty: mlocking feature is enabled and the target user is hbase
> * set and not empty: mlocking feature is enabled and the target user is
> the value of the variable
> Thoughts?
--
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
