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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-467) Collect information about number of tasks succeeded / total per time unit for a tasktracker.
Date Thu, 09 Jul 2009 11:03:17 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12729179#action_12729179
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Amareshwari Sriramadasu commented on MAPREDUCE-467:
---------------------------------------------------

Sorry for the late comment,
update statistics should use tip.machineWhereTaskRan(taskid) insteadof status.getTaskTracker().
Then you may have to introduce a non-null check for the lost tracker case.

> Collect information about number of tasks succeeded / total per time unit for a tasktracker.

> ---------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-467
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-467
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Hemanth Yamijala
>            Assignee: Sharad Agarwal
>         Attachments: 467_v4.patch, 467_v5.patch, 467_v6.patch, 5931_v1.patch, 5931_v2.patch,
5931_v3.patch
>
>
> Collecting information of number of tasks succeeded / total per tasktracker and being
able to see these counts per hour, day and since start time will help reason about things
like the blacklisting strategy.

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