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Support use of xrootd by HEP experiments

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Subject:
From:
Michal Kamil Simon <[log in to unmask]>
Reply To:
Support use of xrootd by HEP experiments <[log in to unmask]>
Date:
Wed, 25 Sep 2019 15:30:40 +0000
Content-Type:
text/plain
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text/plain (61 lines)
Hi Adrian,

I don't think the segv is due to the fact you haven't added any jobs,
at least I cannot reproduce it.

Could you provide a small reproducer and/or a backtrace from your
coredump?

Cheers,
Michal
________________________________________
From: Adrian Sevcenco
Sent: 25 September 2019 09:39
To: Michal Kamil Simon; xrootd-l
Subject: python :: segfault in copyprocess.py

Hi Michal! I have a strange occurrence of
Fatal Python error: Segmentation fault

Thread 0x00007fbab90a4700 (most recent call first):
   File "/usr/lib64/python3.7/concurrent/futures/thread.py", line 78 in
_worker
   File "/usr/lib64/python3.7/threading.py", line 870 in run
   File "/usr/lib64/python3.7/threading.py", line 926 in _bootstrap_inner
   File "/usr/lib64/python3.7/threading.py", line 890 in _bootstrap

Current thread 0x00007fbabaa25740 (most recent call first):
   File
"/home/adrian/.local/lib/python3.7/site-packages/XRootD/client/copyprocess.py",
line 145 in run
   File "/home/adrian/bin/alien.py", line 594 in XrdCopy
   File "/home/adrian/bin/alien.py", line 451 in ProcessXrootdCp
   File "/home/adrian/bin/alien.py", line 1051 in ProcessInput
   File "/home/adrian/bin/alien.py", line 1118 in JAlien
   File "/usr/lib64/python3.7/asyncio/events.py", line 88 in _run
   File "/usr/lib64/python3.7/asyncio/base_events.py", line 1771 in
_run_once
   File "/usr/lib64/python3.7/asyncio/base_events.py", line 534 in
run_forever
   File "/usr/lib64/python3.7/asyncio/base_events.py", line 566 in
run_until_complete
   File "/home/adrian/bin/alien.py", line 1199 in main
   File "/home/adrian/bin/alien.py", line 1203 in <module>
Segmentation fault (core dumped)

i believe that this happens because the i do run without any job added
... of course i could protect the case of no jobs added but maybe can
upstream check if copy jobs are in queue and if not then give a message
that "No copy jobs to run" or something?

Thanks!!
Adrian



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