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-515644786 @jiangxb1987 This approach is the same with my first version code, link is here https://github.com/apache/spark/commit/b47577483935c51e19402a1c0c45f98526e692e6 although it is simple, the issue is it cannot release the RPC resource when killed. See my old comment here: https://github.com/apache/spark/pull/25235#discussion_r307563900 i.e., we cannot do the following which RPC timeout will do: https://github.com/apache/spark/pull/25235/files#r307564268
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