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Posted to dev@flink.apache.org by "David Schlosnagle (Jira)" <ji...@apache.org> on 2024/06/13 23:02:00 UTC

[jira] [Created] (FLINK-35595) MailboxProcessor#processMailsWhenDefaultActionUnavailable is allocation intensive

David Schlosnagle created FLINK-35595:
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             Summary: MailboxProcessor#processMailsWhenDefaultActionUnavailable is allocation intensive
                 Key: FLINK-35595
                 URL: https://issues.apache.org/jira/browse/FLINK-35595
             Project: Flink
          Issue Type: Improvement
          Components: API / Core
            Reporter: David Schlosnagle


While investigating allocation stalls and GC pressure of a Flink streaming pipeline, I noticed significant allocations of {{Optional}} in JFRs from {{org.apache.flink.streaming.runtime.tasks.mailbox. MailboxProcessor#processMailsWhenDefaultActionUnavailable()}}.



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