hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4391) Add ability to start RS as root and call mlockall
Date Sat, 09 Jun 2012 15:22:43 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matteo Bertozzi updated HBASE-4391:
-----------------------------------

    Attachment: HBASE-4391-v0.patch

Something like this? where you can start hbase scripts with --mlock user=hbase to enable the
mlock agent? 
                
> 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
>
>         Attachments: HBASE-4391-v0.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.

--
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

        

Mime
View raw message