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From "Vivek Ratan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-5199) A proposal to merge common functionality of various Schedulers
Date Tue, 10 Feb 2009 07:04:59 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-5199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Vivek Ratan updated HADOOP-5199:
--------------------------------

    Description: 
There are at least 3 Schedulers in Hadoop today: Default, Capacity, and Fairshare. Over time,
we're seeing a lot of functionality common to all three. Many bug fixes, improvements to existing
functionality, and new functionality are applicable to all three schedulers. This trend seems
to be getting stronger, as we notice similar problems, solutions, and ideas. This is a proposal
to detect and consolidate such common functionality.



  was:
There are at least 3 Schedulers in Hadoop today: Default, Capacity, and Fairshare. Over time,
we're seeing a lot of functionality common to all three. Many bug fixes, improvements to existing
functionality, and new functionality are applicable to all three schedulers. This trend seems
to be getting stronger, as we notice similar problems, solutions, and ideas. This is a proposal
to detect and consolidate such common functionality, while at the same time, allowing for
differences in behavior and leaving the door open for other schedulers to be built, as per
HADOOP-3412. 




> A proposal to merge common functionality of various Schedulers
> --------------------------------------------------------------
>
>                 Key: HADOOP-5199
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5199
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Vivek Ratan
>         Attachments: 5199.1.patch
>
>
> There are at least 3 Schedulers in Hadoop today: Default, Capacity, and Fairshare. Over
time, we're seeing a lot of functionality common to all three. Many bug fixes, improvements
to existing functionality, and new functionality are applicable to all three schedulers. This
trend seems to be getting stronger, as we notice similar problems, solutions, and ideas. This
is a proposal to detect and consolidate such common functionality.

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