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Posted to dev@flink.apache.org by "Roman Khachatryan (Jira)" <ji...@apache.org> on 2024/07/30 17:22:00 UTC

[jira] [Created] (FLINK-35933) Skip distributing maxAllowedWatermark if there are no subtasks

Roman Khachatryan created FLINK-35933:
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             Summary: Skip distributing maxAllowedWatermark if there are no subtasks
                 Key: FLINK-35933
                 URL: https://issues.apache.org/jira/browse/FLINK-35933
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / Coordination
            Reporter: Roman Khachatryan
            Assignee: Roman Khachatryan
             Fix For: 1.20.0


On JM, `SourceCoordinator.announceCombinedWatermark` executes unnecessary if there are no subtasks to distribute maxAllowedWatermark. This involves Heap and ConcurrentHashMap accesses and lots of logging.



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