[
https://issues.apache.org/jira/browse/MAPREDUCE-6176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yang Hao updated MAPREDUCE-6176:
--------------------------------
Summary: To limit the map task number or reduce number of an application
(was: To limit the number of map task or reduce number an application)
> To limit the map task number or reduce number of an application
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-6176
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6176
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Components: mr-am, mrv2
> Affects Versions: 2.5.0, 2.4.1, 2.5.1, 2.5.2
> Reporter: Yang Hao
> Assignee: Yang Hao
> Labels: patch
> Fix For: 2.4.1
>
> Attachments: MAPREDUCE-6176.patch
>
>
> As MapReduce is a batch framework of calculation, so people may want to run
> application A as well as application B 、C, but a limit resource should be
> added on A. A good way to do so is that we can limit the number of
> application's map task or reduce task. If we set mapreduce.map.num.max as M,
> then the map task number will not exceed M. At the same time, if we set
> mapreduce.map.num.max as R, then the reduce task number will not exceed R
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
