[HTCondor-users] Job being queued when script echoes nothing

[Marco van Zwetselaar <zwets@xxxxxxxxxx>]

    Dear all,
    
    I regularly use this construct in my job files:
    
    ÂÂÂ queue ID, FN from ./list-todo.sh |
    
    e.g. to skip jobs that have already been done.
    
    However when all jobs have been done, and ./list-todo.sh echoes
    nothing (not even a newline), Condor still queues a job. The ID and
    FN are set to '', so the job usually fails, whereas IMO it shouldn't
    have been queued in the first place.
    
    An obvious workaround is to add a wrapper script, but that isn't
    very clean: the "non-job" still gets scheduled and executed,
    consuming resources it won't use. Worse, if $(FN) appears in
    transfer_input_files, then this won't work.
    
    I would think this is a bug, but maybe there's a knob somewhere that
    changes this behaviour?
    
    Thanks,
    Marco

--

Marco van Zwetselaar

Bioinformatician

Kilimanjaro Clinical Research Institute

P.O. Box 2236 | Moshi, Kilimanjaro | Tanzania

http://www.kcri.ac.tz/ÂÂ|ÂÂzwets@xxxxxxxxxxÂÂ|ÂÂ+255 782 33412