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From "Hemanth Yamijala (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5187) Provide an option to turn off priorities in jobs
Date Mon, 09 Feb 2009 07:54:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12671755#action_12671755
] 

Hemanth Yamijala commented on HADOOP-5187:
------------------------------------------

Yes, I too felt that with the current design it was going to be complicated to do FIFO ordering
per pool while supporting a global ordering by deficit. 

Can you give some more details about how you intend the new design to look like. For e.g.
would there be jobs per pool, which would be ordered according to FIFO or the time they've
waited to get their fairshare ?

> Provide an option to turn off priorities in jobs
> ------------------------------------------------
>
>                 Key: HADOOP-5187
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5187
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/fair-share
>            Reporter: Hemanth Yamijala
>            Priority: Minor
>
> The fairshare scheduler can define pools mapping to queues (as defined in the capacity
scheduler - HADOOP-3445). When used in this manner, one can imagine queues set up to be used
by users who come from disparate teams or organizations (say a default queue). For such a
queue, it makes sense to ignore job priorities and consider the queue as strict FIFO, as it
is difficult to compare priorities of jobs from different users. 

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