ASF GitHub Bot commented on FLINK-10123:

tillrohrmann opened a new pull request #6539: [FLINK-10123] Use 
ExecutorThreadFactory instead of DefaultThreadFactory in RestServer/Client
URL: https://github.com/apache/flink/pull/6539
   ## What is the purpose of the change
   Using the ExecutorThreadFactory hardens the system because it uses the 
   as UncaughtExceptionHandler which terminates the JVM in case of an exception.
   ## Verifying this change
   This change is a trivial rework / code cleanup without any test coverage.
   ## 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)
     - If yes, how is the feature documented? (not applicable)

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> Use ExecutorThreadFactory instead of DefaultThreadFactory in RestServer/Client
> ------------------------------------------------------------------------------
>                 Key: FLINK-10123
>                 URL: https://issues.apache.org/jira/browse/FLINK-10123
>             Project: Flink
>          Issue Type: Improvement
>          Components: REST
>    Affects Versions: 1.6.0, 1.7.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.7.0
> Instead of using the {{DefaultThreadFactory}} in the 
> {{RestServerEndpoint}}/{{RestClient}} we should use the 
> {{ExecutorThreadFactory}} because it uses the {{FatalExitExceptionHandler}} 
> per default as the uncaught exception handler. This should guard against 
> uncaught exceptions by simply terminating the JVM.

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