问题

查看log日志文件/opt/module/hadoop/log

发现： Does not contain a valid host:port authority: hadoop5.0_103:8031 (configuration property 'yarn.resourcemanager.resource-tracker.address')

原因：主机的hostname不合法，应修改为不包含着‘.’ ‘/’ '_'等非法字符。

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hadoop启动dfs报错： ERROR: Cannot set priority of namenode process 496

原因：主机的hostname不合法，应修改为不包含着‘.’ ‘/’ '_'等非法字符。

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