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https://issues.apache.org/jira/browse/HADOOP-3759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12622429#action_12622429
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Hemanth Yamijala commented on HADOOP-3759:
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Ari - no issues, I will modify it as part of this patch. Because your patch is 
already committed, I can change it now. Also, its been raised as a comment on 
this JIRA.

Regarding passing names, we did think of the load on heartbeats. However, I 
think elsewhere the number of heartbeats is being cut down. Hence, we decided 
to go with an approach that was more clear.

> Provide ability to run memory intensive jobs without affecting other running 
> tasks on the nodes
> -----------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3759
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3759
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: mapred
>            Reporter: Hemanth Yamijala
>            Assignee: Hemanth Yamijala
>             Fix For: 0.19.0
>
>         Attachments: HADOOP-3759.patch, HADOOP-3759.patch, HADOOP-3759.patch
>
>
> In HADOOP-3581, we are discussing how to prevent memory intensive tasks from 
> affecting Hadoop daemons and other tasks running on a node. A related 
> requirement is that users be provided an ability to run jobs which are memory 
> intensive. The system must provide enough knobs to allow such jobs to be run 
> while still maintaining the requirements of HADOOP-3581.

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