[
https://issues.apache.org/jira/browse/HADOOP-5199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12672130#action_12672130
]
Vivek Ratan commented on HADOOP-5199:
-------------------------------------
This isn't meant to be a 4th scheduler. The idea was to just have one
scheduler, with two different sorting orders for jobs. If you have this, you
don't need the separate Fairshare and Capacity Scheduler projects.
> 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, 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
