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https://issues.apache.org/jira/browse/MAPREDUCE-6307?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14482582#comment-14482582
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J.Andreina commented on MAPREDUCE-6307:
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Hi [~ajisakaa]

"mapreduce.tasktracker.taskmemorymanager.monitoringinterval" is already added 
as a new key for the deprecated configuration 
"mapred.tasktracker.taskmemorymanager.monitoring-interval" 
(https://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-common/DeprecatedProperties.html).
 And the new key added is also not be used as you have mentioned.

So instead of deprecating 
"mapreduce.tasktracker.taskmemorymanager.monitoringinterval" by adding new key 
to this , can't we removed this from hadoop 2.6.0 ?
Please share your thoughts.

> Deprecate mapreduce.tasktracker.taskmemorymanager.monitoringinterval
> --------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6307
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6307
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>    Affects Versions: 2.6.0
>            Reporter: Akira AJISAKA
>            Assignee: J.Andreina
>            Priority: Minor
>              Labels: newbie
>
> mapreduce.tasktracker.taskmemorymanager.monitoringinterval is not used 
> anywhere. We should deprecate the property.



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