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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-707) Provide a jobconf property for explicitly assigning a job to a pool
Date Tue, 03 Nov 2009 08:27:59 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772938#action_12772938
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Hemanth Yamijala commented on MAPREDUCE-707:
--------------------------------------------

Matei, maybe it makes more sense to add fairshare scheduler properties to a scheduler specific
file rather than mapred-*.xml, no ? This way any framework level changes that handle the framework's
configuration would not be tied up by specific scheduler implementation. And also vice versa.
Let me know what you think.

> Provide a jobconf property for explicitly assigning a job to a pool
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-707
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-707
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: contrib/fair-share
>            Reporter: Matei Zaharia
>            Priority: Trivial
>
> A common use case of the fair scheduler is to have one pool per user, but then to define
some special pools for various production jobs, import jobs, etc. Therefore, it would be nice
if jobs went by default to the pool of the user who submitted them, but there was a setting
to explicitly place a job in another pool. Today, this can be achieved through a sort of trick
in the JobConf:
> {code}
> <property>
>   <name>mapred.fairscheduler.poolnameproperty</name>
>   <value>pool.name</value>
> </property>
> <property>
>   <name>pool.name</name>
>   <value>${user.name}</value>
> </property>
> {code}
> This JIRA proposes to add a property called mapred.fairscheduler.pool that allows a job
to be placed directly into a pool, avoiding the need for this trick.

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