hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Allen Wittenauer (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4058) adjustable task priority
Date Fri, 23 Mar 2012 01:10:24 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4058?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer updated MAPREDUCE-4058:
----------------------------------------

    Attachment: MAPREDUCE-4058-branch-1.0.patch

This patch adds a variable to the task-controller.cfg called 'task.niceness.adjustment' that
acts similarly to renice. Note that setpriority() is called while still root, allowing for
the tasks to be set to a HIGHER priority than the TT, if someone so desires to.
                
> adjustable task priority
> ------------------------
>
>                 Key: MAPREDUCE-4058
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4058
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: task-controller
>    Affects Versions: 1.0.0
>            Reporter: Allen Wittenauer
>         Attachments: MAPREDUCE-4058-branch-1.0.patch
>
>
> For those of us that completely destroy our CPUs, it is beneficial to be able to run
user tasks at a different priority than the tasktracker. This would allow for TTs (and by
extension, DNs) to get more CPU clock cycles so that things like heartbeats don't disappear.

--
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