Call From hadoop102/192.168.121.102 to hadoop102:9000 failed on connection exception - 代码天地

Call From hadoop102/192.168.121.102 to hadoop102:9000 failed on connection exception

其他 2021-11-25 10:15:13 阅读次数: 0

问题截图

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问题描述

在测试Spark中examples案例时，出现Call From hadoop102/192.168.121.102 to hadoop102:9000 failed on connection exception: java.net.ConnectException: 拒绝连接的错误。

问题原因

hadoop集群没有开启

解决办法

打开hadoop集群

[root@hadoop102 hadoop-2.7.2]# sbin/start-all.sh

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结果截图

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转载自blog.csdn.net/weixin_44480968/article/details/119574789

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