[GitHub] Clarkkkkk opened a new pull request #6676: [FLINK-10247][Metrics] Run MetricQueryService in separate thread pool

[GitBox <gi...@apache.org>]

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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