spark报错Failed to send RPC XXX to / XXX: java.nio.channels.ClosedChannel
命令如下:bin/spark-submit--classcom.practice1.Tax1--masteryarn--num-executors4--driver-memory1g--executor-memory1g/opt/software/data/sparkcount.jarhdfs:/data_in/taxi.csv1、错误如下:19/07/0923:34:50WARNClient:N