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https://issues.apache.org/jira/browse/MAPREDUCE-4227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ravi Prakash updated MAPREDUCE-4227:
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Attachment: MAPREDUCE-4227.branch-1.patch
Hi Matt,
I'm attaching the patch. It makes the following changes
1. buckets are removed only if there are more in the current TaskTrackers than
are required
2. Earlier the TimeWindow statistics were not being updated asap. They would
lag behind by one "update cycle" I've fixed that as well.
3. I took the liberty to add some much needed javadocs in this JIRA.
Disclaimer: StatisticsCollector is being referenced in some AspectJ files.
Unfortunately I don't know how I can check if my changes affected anything in
there. Any clues?
> TimeWindow statistics are not updated for TaskTrackers which have been
> restarted.
> ---------------------------------------------------------------------------------
>
> Key: MAPREDUCE-4227
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4227
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 0.20.205.0
> Reporter: Ravi Prakash
> Assignee: Ravi Prakash
> Attachments: MAPREDUCE-4227.branch-1.patch
>
>
> Whenever a TaskTracker is restarted after the JobTracker has been running for
> a while (an hour / day maybe), the TimeWindow statistics on the JobTracker
> Active nodes page are stuck at 0.
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