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https://issues.apache.org/jira/browse/HADOOP-5548?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Devaraj Das updated HADOOP-5548:
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Status: Open (was: Patch Available)
This patch doesn't look like the right fix w.r.t the JobTracker locking in the
JobRecovery methods. For example, the place where the call to
updateTaskTrackerStatus is made, it locks only the taskTrackers object, but it
should be locking JobTracker and trackerExpiryQueue as well. This is in line
with keeping future maintenance in mind as Owen had pointed out.
For now, what I will do is that I will commit a portion of the patch that
handles the negative counts of maps/reduces, and commit that part as part of
HADOOP-5231.
> Observed negative running maps on the job tracker
> -------------------------------------------------
>
> Key: HADOOP-5548
> URL: https://issues.apache.org/jira/browse/HADOOP-5548
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.20.0
> Reporter: Owen O'Malley
> Assignee: Amareshwari Sriramadasu
> Priority: Blocker
> Fix For: 0.19.2, 0.20.0
>
> Attachments: patch-5548.txt
>
>
> We saw in both the web/ui and cli tools:
> {noformat}
> Cluster Summary (Heap Size is 11.7 GB/13.37 GB)
> Maps Reduces Total Nodes Map Task Reduce Task Avg. Blacklisted
> Submissions Capacity Capacity Tasks/Node Nodes
> -971 0 133 434 1736 1736 8.00 0
> {noformat}
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