0000026: integration.py hangs w/ one job that never starts

(0000014)
AndrewLeaverFay (Administrator)
2012-06-26 16:41

The subprocess module in python 2.x deadlocks on calls to Popen. This is fixed in python3.

I'm adding a new integration test launch script, integration3.py, for use in python3.

(0000044)
smlewis (Administrator)
2012-08-02 12:58

Sergey (?) stated at the dev meeting that this can be fixed in Python 2.? by using fork instead of subprocess, without the inconvenient need for Python 3.

(0000093)
Sergey (Administrator)
2012-09-07 19:49

Committed a path at r51043. Please use new command line option '--fork' when running integration.py and see if it helps. This commit also should improve cntr-c handling.

(0000095)
smlewis (Administrator)
2012-09-10 09:12

I tried testing post 51043, but couldn't get the 'bad behavior' to reproduce reliably (not that it ever did) - I was going to try to do a ten-runs-of-each comparison between integration.py, integration.py --fork, and integration3.py, but the former only failed the first time (out of ten tries) and so I didn't bother with the latter. Maybe it was non-normal load conditions (Sunday afternoon, nobody on the itest machine...)

(0000111)
Sergey (Administrator)
2012-09-28 13:50

I rewrote integration.py script using Unix 'fork' command to span subprocess. This seems to fix the issue.

Issue History
Date Modified	Username	Field	Change
2012-06-25 13:23	AndrewLeaverFay	New Issue
2012-06-26 16:39	AndrewLeaverFay	Assigned To	=> AndrewLeaverFay
2012-06-26 16:39	AndrewLeaverFay	Status	new => assigned
2012-06-26 16:41	AndrewLeaverFay	Fixed in SVN Version	=> 49614
2012-06-26 16:41	AndrewLeaverFay	Note Added: 0000014
2012-06-26 16:41	AndrewLeaverFay	Status	assigned => resolved
2012-06-26 16:41	AndrewLeaverFay	Fixed in Version	=> Trunk
2012-06-26 16:41	AndrewLeaverFay	Resolution	open => fixed
2012-08-02 12:58	smlewis	Note Added: 0000044
2012-08-02 12:58	smlewis	Status	resolved => feedback
2012-08-02 12:58	smlewis	Resolution	fixed => reopened
2012-08-08 09:20	smlewis	Assigned To	AndrewLeaverFay => Sergey
2012-08-08 09:20	smlewis	Status	feedback => assigned
2012-09-07 19:49	Sergey	Note Added: 0000093
2012-09-10 09:12	smlewis	Note Added: 0000095
2012-09-28 13:50	Sergey	Fixed in SVN Version	49614 => 51417
2012-09-28 13:50	Sergey	Note Added: 0000111
2012-09-28 13:50	Sergey	Status	assigned => resolved
2012-09-28 13:50	Sergey	Resolution	reopened => fixed
2012-10-02 13:34	Sergey	Relationship added	related to 0000033
2013-03-01 09:57	smlewis	Relationship added	parent of 0000185

Notes
(0000014) AndrewLeaverFay (Administrator) 2012-06-26 16:41	The subprocess module in python 2.x deadlocks on calls to Popen. This is fixed in python3. I'm adding a new integration test launch script, integration3.py, for use in python3.

(0000044) smlewis (Administrator) 2012-08-02 12:58	Sergey (?) stated at the dev meeting that this can be fixed in Python 2.? by using fork instead of subprocess, without the inconvenient need for Python 3.

(0000093) Sergey (Administrator) 2012-09-07 19:49	Committed a path at r51043. Please use new command line option '--fork' when running integration.py and see if it helps. This commit also should improve cntr-c handling.

(0000095) smlewis (Administrator) 2012-09-10 09:12	I tried testing post 51043, but couldn't get the 'bad behavior' to reproduce reliably (not that it ever did) - I was going to try to do a ten-runs-of-each comparison between integration.py, integration.py --fork, and integration3.py, but the former only failed the first time (out of ten tries) and so I didn't bother with the latter. Maybe it was non-normal load conditions (Sunday afternoon, nobody on the itest machine...)

(0000111) Sergey (Administrator) 2012-09-28 13:50	I rewrote integration.py script using Unix 'fork' command to span subprocess. This seems to fix the issue.