[GitHub] [spark] WeichenXu123 commented on issue #25235: [SPARK-28483][Core] Fix canceling a spark job using barrier mode but barrier tasks blocking on BarrierTaskContext.barrier()

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

WeichenXu123 commented on issue #25235: [SPARK-28483][Core] Fix canceling a spark job using barrier mode but barrier tasks blocking on BarrierTaskContext.barrier()
URL: https://github.com/apache/spark/pull/25235#issuecomment-515943949
 
 
   I modify my approach, add an RPC interface like:
   ```
     def askCancelable[T: ClassTag](
         message: Any,
         timeout: RpcTimeout): CancelableFuture[T]
   ```
   See my PR description for details.
   
   This approach add less and simpler code into RPC framework.
   CC @zsxwing @cloud-fan 

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