项目场景：

        Hadoop启动NameNode报错：：ERROR: Cannot set priority of namenode process 
 

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问题描述：

        Hadoop启动NameNode报错ERROR: Cannot set priority of namenode process 2639

[atguigu@localhost333 logs]$ tail -100  hadoop-localhost -namenode-hadoop333.log 

 

@Override public void run() { bytes = mmInStream.read(buffer); mHandler.obtainMessage(READ_DATA, bytes, -1, buffer).sendToTarget(); } 

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原因分析：

首先查看日志：hadoop-localhost -namenode-hadoop103.log

命令如下：
[localhost @hadoop333 logs]$ tail -100  hadoop-localhost -namenode-hadoop103.log 

2021-09-17 16:41:25,656 INFO org.apache.localhost.util.ExitUtil: 
Exiting with status 1: org.apache.localhost.hdfs.server.common.InconsistentFSStateException: 
Directory /opt/ha/hadoop-3.1.3/data/name is in an inconsistent state: 
storage directory does not exist or is not accessible.
2021-09-17 16:41:25,663 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: 
SHUTDOWN_MSG: 
/************************************************************
SHUTDOWN_MSG: Shutting down NameNode at hadoop333/192.168.1.103

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解决方案：

尝试将CentOS7重启，之后重新将hadoop中的data和logs 还有系统根目录的tmp中的文件都删除，对Hadoop重新进行初始化问题解决。

rm -rf /opt/ha/hadoop-3.1.3/data /opt/ha/hadoop-3.1.3/logs

sudo rm -rf /tmp/*

hdfs namenode -format