Official document:
https://hadoop.apache.org/docs/r2.9.2/hadoop-project-dist/hadoop-common/SingleCluster.html
Configuration free Password login for communication between nameNode and dataNode
Official document:
https://hadoop.apache.org/docs/r2.9.2/hadoop-project-dist/hadoop-common/SingleCluster.html
Configuration free Password login for communication between nameNode and dataNode