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  1. Cassandra
  2. CASSANDRA-14558

dtest: log-watching thread leak and thread starvation

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Normal
    • Resolution: Fixed
    • Fix Version/s: None
    • Component/s: Test/dtest
    • Labels:
    • Severity:
      Normal

      Description

      We get occasional build timeouts on b.a.o after pytest becomes unresponsive for over 20 minutes. This will result in a thread dump like this one:

      https://builds.apache.org/view/A-D/view/Cassandra/job/Cassandra-2.2-dtest/117/consoleFull

      If you look for "Log-watching thread starting" messages and the dump, it becomes quite obvious whats the issue here.

      I had a quick look at the python3 / pytest related changes in CASSANDRA-14134 and it seems that some of the handling around dtest_setup's log_watch_thread var has been changed in a way that would prevent eventually yielding the allocated thread.

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              • Assignee:
                spodxx@gmail.com Stefan Podkowinski
                Reporter:
                spodxx@gmail.com Stefan Podkowinski
                Authors:
                Stefan Podkowinski
                Reviewers:
                Kurt Greaves
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                  Updated:
                  Resolved: