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From "Iyappan Srinivasan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1048) Show total slot usage in cluster summary on jobtracker webui
Date Thu, 15 Oct 2009 11:56:31 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12766034#action_12766034
] 

Iyappan Srinivasan commented on MAPREDUCE-1048:
-----------------------------------------------

+1 for QA 

patch-1048-0.20.txt

Test scenarios covered:

1) Ran normal, sleep, randomwriter jobs and verified if the slots like running map tasks,
Running reduce tasks, occupied map slots, occupied Reduce Slots, Reserved map slots, reserved
Reduce Slots.

2) Ran high RAM jobs with more Map slots and more reuce slots in various jobs and made sure
that the slots reflect the numbers correctly from various task trackers.

3) In Task tracker restart, Lost Task tracker scenarios, the slots statistics reflect accordingly.

4) In JT restart scenario, job is resubmitted and slot values reflected accordingly.



> Show total slot usage in cluster summary on jobtracker webui
> ------------------------------------------------------------
>
>                 Key: MAPREDUCE-1048
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1048
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>    Affects Versions: 0.20.1
>            Reporter: Amar Kamat
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.21.0
>
>         Attachments: mapred-1048-v1.0.patch, mapred-1048-v1.1.patch, patch-1048-0.20.txt,
patch-1048-1.txt, patch-1048-2.txt, patch-1048-3.txt, patch-1048.txt
>
>
> With High-Ram jobs coming into the picture, its important to also show the slot usage
in cluster summary since total-running-maps < total-slots-occupied. 

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