java.io.IOException: java.net.ConnectException: Call From master/192.168.58.128 to master:10020 failed on connection exception: java.net.ConnectException: 拒绝连接;

运行hive的sql查询统计调用mapreduce时报错

原因是JobHistoryServer未启动

解决办法：

cd /usr/local/hadoop/sbin
mr-jobhistory-daemon.sh start historyserver

若出现：

WARNING: Use of this script to start the MR JobHistory daemon is deprecated.
WARNING: Attempting to execute replacement "mapred --daemon start" instead.

通过jps命令：

java.io.IOException: java.net.ConnectException: Call From master/192.168.58.128 to master:10020 failed on connection exception: java.net.ConnectException: 拒绝连接;

成功启动！！

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