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Posted to mapreduce-issues@hadoop.apache.org by "Chengwei Wang (Jira)" <ji...@apache.org> on 2020/04/15 15:57:00 UTC
[jira] [Updated] (MAPREDUCE-7274) Enable to set running task limit
when mapreduce job is running
[ https://issues.apache.org/jira/browse/MAPREDUCE-7274?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chengwei Wang updated MAPREDUCE-7274:
-------------------------------------
Description: MRv2 enabled users to control the number of map or reduce tasks running simultaneously by configuration _mapreduce.job.running.map.limit_ or _mapreduce.job.running.reduce.limit._ But users can only set limit number before submitting the job to rm. So, it's meaningful to enable users to set the limit of running map or reduce tasks when job is running, which can help users to restrict resource usage of job and give resources to high-priority job. (was: MRv2 enabled users to control the number of map or reduce tasks running simultaneously by configuration _mapreduce.job.running.map.limit_ or _mapreduce.job.running.reduce.limit._ But users can only set limit number before submitting the job to rm. So, it's meaningful to enable users to set the limit of running map or reduce __ tasks, which can help users to restrict resource usage of job and give resources to high-priority job.)
> Enable to set running task limit when mapreduce job is running
> --------------------------------------------------------------
>
> Key: MAPREDUCE-7274
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7274
> Project: Hadoop Map/Reduce
> Issue Type: New Feature
> Reporter: Chengwei Wang
> Priority: Major
>
> MRv2 enabled users to control the number of map or reduce tasks running simultaneously by configuration _mapreduce.job.running.map.limit_ or _mapreduce.job.running.reduce.limit._ But users can only set limit number before submitting the job to rm. So, it's meaningful to enable users to set the limit of running map or reduce tasks when job is running, which can help users to restrict resource usage of job and give resources to high-priority job.
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