[jira] [Commented] (OODT-765) Stale cas.workflow.pid PID files should be removed or set to blank

["Chris A. Mattmann (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OODT-765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14193287#comment-14193287 ] 

Chris A. Mattmann commented on OODT-765:
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Thanks [~sabarish.venkatraman] - do you have a patch to fix the issue?

> Stale cas.workflow.pid PID files should be removed or set to blank
> ------------------------------------------------------------------
>
>                 Key: OODT-765
>                 URL: https://issues.apache.org/jira/browse/OODT-765
>             Project: OODT
>          Issue Type: Improvement
>          Components: file manager, resource manager, workflow manager
>    Affects Versions: 0.7
>         Environment: Ubuntu 14.04 LTS - 32 bit
>            Reporter: Sabarish Venkatraman
>            Priority: Minor
>   Original Estimate: 336h
>  Remaining Estimate: 336h
>
> $OODT_HOME/filemgr/run - Contains PID of filemanager
> $OODT_HOME/resmgr/run - Contains PID of resourcemanager
> $OODT_HOME/workflow/run - Contains PID of workflowmanager
> The PIDs are stored in cas.filemgr.pid when these managers are started.
> At times, some of these managers might not launch fully due to some internal exceptions, after a PID had been written to these files.
> During the subsequent launch, if a PID is already present in the file, it fails to launch the filemgr/workflow manager/resource mgr.
> Sample filemgr launch issue:
> root@ubuntu:/home/user/Desktop/project2/oodt-deploy/filemgr/bin# ./filemgr start
> PID file (/home/user/Desktop/project2/oodt-deploy/filemgr/run/cas.filemgr.pid) found. Is File Manager still running? Start aborted.
> The stale process ids stored in the files should be handled.
> Fix:
> Invalidate the contents of the file by setting it to blank. (or)
> Deleting the file upon process termination or during manager launch failure.
> Temporary fix:
> Delete the cas.workflow.pid file manually and then start the appropriate managers.



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