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https://issues.apache.org/jira/browse/CHUKWA-487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12868275#action_12868275
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Bill Graham commented on CHUKWA-487:
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This approach makes sense to me w.r.t. the deadlock. I've deployed it an will
see how it works.
Ari, regarding your comment above about 'hoping the daemon respawns', how do we
expect the daemon to do that? Is there logic in the chukwa start script to
check for that case?
> Collector left in a bad state after temprorary NN outage
> --------------------------------------------------------
>
> Key: CHUKWA-487
> URL: https://issues.apache.org/jira/browse/CHUKWA-487
> Project: Hadoop Chukwa
> Issue Type: Bug
> Components: data collection
> Affects Versions: 0.4.0
> Reporter: Bill Graham
> Priority: Blocker
> Attachments: CHUKWA-487.patch, CHUKWA-487.threaddump.txt
>
>
> When the name node returns errors to the collector, at some point the
> collector dies half way. This behavior should be changed to either resemble
> the agents and keep trying, or to completely shutdown. Instead, what I'm
> seeing is that the collector logs that it's shutting down, and the
> var/pidDir/Collector.pid file gets removed, but the collector continues to
> run, albeit not handling new data. Instead, this log entry is repeated ad
> infinitum:
> 2010-05-06 17:35:06,375 INFO Timer-1 root -
> stats:ServletCollector,numberHTTPConnection:0,numberchunks:0
> 2010-05-06 17:36:06,379 INFO Timer-1 root -
> stats:ServletCollector,numberHTTPConnection:0,numberchunks:0
> 2010-05-06 17:37:06,384 INFO Timer-1 root -
> stats:ServletCollector,numberHTTPConnection:0,numberchunks:0
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