[AMBARI-20070] Agent heartbeat lost due to subprocess.Popen race condition

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.5.0
• Component/s: ambari-agent

Environment

Python 2.7

• Assignee: Attila Doroszlai
• Reporter: Denis Tarasyuk
• Created: 17/Feb/17 17:53
• Updated: 20/Mar/17 21:36
• Resolved: 13/Mar/17 21:23

Description

Workaround for http://bugs.python.org/issue19809 that probably causes subprocess.Popen call to get stuck in:

File: "/usr/lib/python2.7/subprocess.py", line 679, in __init__
  errread, errwrite)
File: "/usr/lib/python2.7/subprocess.py", line 1244, in _execute_child
  data = _eintr_retry_call(os.read, errpipe_read, 1048576)
File: "/usr/lib/python2.7/subprocess.py", line 478, in _eintr_retry_call
  return func(*args)

Issue Links

• links to: Review request
• links to: Review request #2: multiprocessing module