srowen commented on issue #20512: [SPARK-23182][CORE] Allow enabling TCP keep alive on the master RPC connections. URL: https://github.com/apache/spark/pull/20512#issuecomment-447809648 Ignore the test failure for now, I think it's unrelated. For Spark 3, I think we can make the default 'true' and leave this as a safety valve, if this is probably what people want to set always. For back-porting to Spark 2.x, we could then open an identical PR that sets it to false.
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