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From "Matei Zaharia (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5745) Allow setting the default value of maxRunningJobs for all pools
Date Sun, 26 Apr 2009 23:14:30 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12702955#action_12702955
] 

Matei Zaharia commented on HADOOP-5745:
---------------------------------------

Dhruba, I think you have a bug in that reloadAllocs doesn't define poolMaxJobsDefault as a
local variable. This means that it assigns directly to the class field when it reads that
element in the XML file. This is inconsistent with how reloadAllocs handles other settings
because it means that if reloadAllocs encounters an error in the file later, it will have
set the poolMaxJobsDefault but not the other settings. You just want to define a local variable
poolMaxJobsDefault in reloadAllocs the same way it has a local userMaxJobsDefault.

> Allow setting the default value of maxRunningJobs for all pools
> ---------------------------------------------------------------
>
>                 Key: HADOOP-5745
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5745
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/fair-share
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>         Attachments: fairShareMaxJobs.patch
>
>
> The <pool> element allows setting the maxRunningJobs for that pool. It wold be
nice to be able to set a default value for all pools.
> In out configuration, pools are autocreated.. every new uesre gets his own pool. We would
like to allow each user to be able to run a max of 5 jobs at a time. For the etl pool, this
limit will be set to a greater value,

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