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https://issues.apache.org/jira/browse/MAPREDUCE-6176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yang Hao updated MAPREDUCE-6176:
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Description: 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 (was: As MapReduce is batch framework of calculation, so
people may want to run application A as well as application B . 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)
Target Version/s: 2.5.2, 2.5.1, 2.4.1, 2.5.0 (was: 2.5.0, 2.4.1, 2.5.1,
2.5.2)
> Users should limit the 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
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