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Re: [Condor-users] <Keyword>_HOOK_PREPARE_JOB usage
- Date: Tue, 19 Jun 2012 17:03:03 -0400
- From: Ian Chesal <ichesal@xxxxxxxxxxxxxxxxxx>
- Subject: Re: [Condor-users] <Keyword>_HOOK_PREPARE_JOB usage
On Tuesday, 19 June, 2012 at 4:58 PM, Kunal Rao wrote:
How to use the <Keyword>_HOOK_PREPARE_JOB mentioned on this page : http://research.cs.wisc.edu/condor/manual/v7.4/4_4Job_Hooks.html
to setup job environment before it is run ?
I'd like to use this hook to setup some environment variables before the job starts execution. How do I set it up ? Any sample configuration settings would be helpful.
This won't work for environment variable setup. From the documentation:
The condor_starter waits until this hook returns before attempting to execute the job. If the hook returns a non-zero exit status, the condor_starter will assume an error was reached while attempting to set up the job environment and abort the job.
The process exits, returns control to the parent process (condor_starter) before a new sub-process is spawned to run your actual job. So any environment changes made by the hook script won't be seen by then job.
This will be the parent process of the job so any environment changes it makes will be seen by the job.
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