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authorAndrew Yourtchenko <ayourtch@gmail.com>2019-11-05 01:08:26 +0100
committerOle Trøan <otroan@employees.org>2019-11-05 09:06:15 +0000
commit42693521f6046997133c8f63bcfc9d615d96f69d (patch)
tree7485a37e8d8470875bf8b6b3696bfaeee3135a0d /src/plugins
parentf7f49640bbb4339d71f8b713b04b8f401d5fc270 (diff)
tests: avoid test runner hanging on child test process join
In parallel test, the single process is spawning a bunch of child processes running the tests, and communicates to them. When the child process signals that it has finished, the parent calls child.join(). Sometimes this join never returns. The result is a lot of defunct python processes, and the test run just hangs. I have seen this failure intermittently a fair bit in a busy containerized environment, and by chance, consistently reproduced it on a Thinkpad X280 with 8G of RAM and Ubuntu 19.04, which allowed to diagnose it. Type: test Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com> Change-Id: If0a3110fc2d23e73d77c310d61c3ea90a2b53610
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