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https://issues.apache.org/jira/browse/HADOOP-5931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12716297#action_12716297
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Hemanth Yamijala commented on HADOOP-5931:
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I am assuming the moving window mechanism would be flexible enough to add new
bucket sizes as required.
Regarding having the computation on the tasktracker, and reporting the status
via status, one problem is that if we want to change the bucket size, it would
involve a change in the status object.
Also, one requirement for this is to store this information on the JobTracker.
Can you describe how this will be stored, mechanics with respect to lost
tasktrackers etc ?
Will this information be available if the JobTracker restarts ?
> Collect information about number of tasks succeeded / total per time unit for
> a tasktracker.
> ---------------------------------------------------------------------------------------------
>
> Key: HADOOP-5931
> URL: https://issues.apache.org/jira/browse/HADOOP-5931
> Project: Hadoop Core
> Issue Type: Improvement
> Components: mapred
> Reporter: Hemanth Yamijala
>
> 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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