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运行 start-dfs.sh 启动 hadoop 服务时出现以下错误：

Starting namenodes on [localhost]
ERROR: Attempting to operate on hdfs namenode as root
ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.
Starting datanodes
ERROR: Attempting to operate on hdfs datanode as root
ERROR: but there is no HDFS_DATANODE_USER defined. Aborting operation.
Starting secondary namenodes [ahsan-Lenovo-G570]
ERROR: Attempting to operate on hdfs secondarynamenode as root
ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation.
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1 回答 1

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在 hadoop 主目录中打开 etc/hadoop/hadoop-env.sh 文件并添加以下行以删除错误：

export HDFS_NAMENODE_USER=root
export HDFS_DATANODE_USER=root
export HDFS_SECONDARYNAMENODE_USER=root
export YARN_RESOURCEMANAGER_USER=root
export YARN_NODEMANAGER_USER=root

您可以通过在上述命令中替换 root 来添加您的用户名。

于 2019-02-28T09:22:53.513 回答