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Posted to issues@flink.apache.org by "Chesnay Schepler (Jira)" <ji...@apache.org> on 2021/11/22 14:22:00 UTC

[jira] [Created] (FLINK-25006) Investigate memory issues on CI

Chesnay Schepler created FLINK-25006:
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             Summary: Investigate memory issues on CI
                 Key: FLINK-25006
                 URL: https://issues.apache.org/jira/browse/FLINK-25006
             Project: Flink
          Issue Type: Sub-task
          Components: Build System / CI
            Reporter: Chesnay Schepler


During my tests with Java 17 I noticed significant speed regressions in tests that actually run jobs, to the point where they effectively stalled. If they managed to complete, then subsequent tests would also experience a significant slowdown.

As an experiment I disable fork reuse, which very quickly resulted in direct memory OOMs.

We need to investigate what is going on. I can provide logs and a branch with Java 17 to anyone who is interested.



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