Clarkkkkk opened a new pull request #6676: [FLINK-10247][Metrics] Run MetricQueryService in separate thread pool URL: https://github.com/apache/flink/pull/6676 ## What is the purpose of the change Introduce a dedicated thread pool for MetricQueryService to process messages. ## Brief change log - Add a single executor thread pool for MetricQueryService - Wrap the logic of processing message in a Runnable and submit to the thread pool once receiving any message ## Verifying this change This change is already covered by existing tests, such as *(please describe tests)*. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - Design: Using a Single Executor thread pool to avoid racing condition, messages will still be processed one by one.
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