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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