Greg Hogan created FLINK-4212:
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Summary: Lock on pid file when starting daemons
Key: FLINK-4212
URL: https://issues.apache.org/jira/browse/FLINK-4212
Project: Flink
Issue Type: Improvement
Components: Startup Shell Scripts
Affects Versions: 1.1.0
Reporter: Greg Hogan
Assignee: Greg Hogan
As noted on the mailing list (0), when multiple TaskManagers are started in
parallel (using pdsh) there is a race condition on updating the pid: 1) the pid
file is first read to parse the process' index, 2) the process is started, and
3) on success the daemon pid is appended to the pid file.
We could use a tool such as {{flock}} to lock on the pid file while starting
the Flink daemon.
0:
http://mail-archives.apache.org/mod_mbox/flink-user/201607.mbox/%3CCA%2BssbKXw954Bz_sBRwP6db0FntWyGWzTyP7wJZ5nhOeQnof3kg%40mail.gmail.com%3E
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