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From "Alejandro Abdelnur (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5311) Replace SLOTS_MILLIS counters with MEM_MILLIS
Date Tue, 13 Aug 2013 17:23:50 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738516#comment-13738516
] 

Alejandro Abdelnur commented on MAPREDUCE-5311:
-----------------------------------------------

[~acmurthy], it seems we are talking pass each other here. 

* 1. SLOT_MILLIS does make sense in YARN. yes/no?
* 2. We need to redefine what SLOT_MILLIS means/reports in YARN. yes/no?

Are we in agreement that the answers to these questions is #1 NO and #2 YES.

If we are in agreement, then we have to see how to address this in the least disruptive way.

Sandy's latest proposal suggests we do the following:

* Introduce the concept of CONTAINER_MILLIS (regardless of the container size)
* Deprecate SLOT_MILLIS and map it to report CONTAINER_MILLIS

And we could later augment this with additional counters:

* Introduce the concept of MEMORY_MILLIS
* Introduce the concept of CPU_MILLIS


                
> Replace SLOTS_MILLIS counters with MEM_MILLIS
> ---------------------------------------------
>
>                 Key: MAPREDUCE-5311
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5311
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: applicationmaster
>    Affects Versions: 2.0.4-alpha
>            Reporter: Alejandro Abdelnur
>            Assignee: Sandy Ryza
>            Priority: Blocker
>             Fix For: 2.1.0-beta
>
>         Attachments: MAPREDUCE-5311-1.patch, MAPREDUCE-5311.patch, MAPREDUCE-5311.patch
>
>
> Per discussion in MAPREDUCE-5310 and comments in the code we should remove all the related
logic and just leave the counter constant for backwards compatibility and deprecate the counter
constants.

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