【已解决】ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation. Starting datanodes

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

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原文地址：https://www.cnblogs.com/rainbow-1/p/15292342.html