Mantis Bug Tracker

View Issue Details Jump to Notes ] Issue History ] Print ]
IDProjectCategoryView StatusDate SubmittedLast Update
0000026Rosetta[All Projects] Crashpublic2012-06-25 13:232013-03-01 09:57
Assigned ToSergey 
PlatformAll platformsOSAnyOS VersionAny
Product VersionTrunk 
Fixed in VersionTrunk 
Summary0000026: hangs w/ one job that never starts
Descriptionpython -j 12 will finish 168 of the 169 tests, while the last one will never get started. Sometimes two tests will hang without ever getting started. It's likely a race condition in the integration test Queue class.

It's never the same test that's the one that fails to start, so this problem is not likely to be a problem with Rosetta.
Steps To ReproduceHappens more often when -j is high.
TagsNo tags attached.
Application(s) Affectedall
Command Line Usedpython -j24
Developer Options
Fixed in SVN Version51417
Attached Files

- Relationships
parent of 0000185resolvedsmlewis Is deprecated? 
related to 0000033resolvedSergey integration tests spawned subprocesses are not killed properly 

-  Notes
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,, for use in python3.
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.
Sergey (Administrator)
2012-09-07 19:49

Committed a path at r51043. Please use new command line option '--fork' when running and see if it helps. This commit also should improve cntr-c handling.
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, --fork, and, 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...)
Sergey (Administrator)
2012-09-28 13:50

I rewrote 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

Copyright © 2000 - 2012 MantisBT Group
Powered by Mantis Bugtracker