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https://issues.apache.org/jira/browse/FALCON-1756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15106431#comment-15106431
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Pallavi Rao commented on FALCON-1756:
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[~deepak.barr], just realized that "kill -15" might still return a '0' even if
process doesn't get killed (haven't checked), coz., kill has sent the TERM
signal. I was looking at how YARN / HDFS handles it. May be we can draw
inspiration from there :-). Anyway, just wanted to correct myself. Please go
ahead with a fix that you deem fit.
> Remove PID files on service stop
> --------------------------------
>
> Key: FALCON-1756
> URL: https://issues.apache.org/jira/browse/FALCON-1756
> Project: Falcon
> Issue Type: Improvement
> Affects Versions: 0.9
> Reporter: Deepak Barr
> Assignee: Deepak Barr
> Priority: Minor
> Fix For: trunk
>
> Attachments: FALCON-1756.patch
>
>
> Currently,
> When someone runs falcon-stop, falcon.pid file is not removed.
> So, if someone runs falcon-stop again, it will again try to kill the same PID
> and will get the following error -
> bin/service-stop.sh: line 37: kill: (985) - No such process
> Also, in rarest case, if the PID is subsequently assigned to some other
> process, the stop script might try to kill that process.
> It is generally a good practice to remove the PID file after the process is
> stopped.
> Evidently, similar thing happens with prism-stop as well.
> Thoughts ??
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