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Cause: In TestForkInThread test case from test_thread.py upstream test suite, sys.exit(0) is used instead of os._exit(0).
Consequence: Zombie processes are left behind which leave brew builds hanging.
Fix: Apply upstream patch to change the TestForkInThread test case
Result: Brew builds are not hanging.
Description of problem:
The following upstream tests, because of bug 1313148, will cause building python package on brew stall and leave orphan processes that need manually kill
test___all__
test_asynchat
test_tcl
test_tk
test_ttk_guionly
test_ttk_textonly
Version-Release number of selected component (if applicable):
python >= 2.7
python >= 3.4
Additional info
The origin issue that report the problem is here
https://engineering.redhat.com/rt/Ticket/Display.html?id=374328
Here is a demo to verify why the bug 1313148 make brew building python package trouble. The demo files in the attachment.
Please run the demo as following
1. need a rhel7/centos7/fedora23 system
2. install python2 tinter module
3. download the two program to temporary directory
4. have the two program executable
5. run the cntl.py
6. if emulate mock-1.1.16, you need manually kill the cntl.py process
7. verify that there is an orphan process
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHSA-2016-2586.html