The first time you use Hadoop, formatted file system commands: hdfs namenode -format
Start HDFS: start-dfs.sh
Start YARN: start-all.sh
start-all.sh equivalent start-dfs.sh + start-yarn.sh
The first time you use Hadoop, formatted file system commands: hdfs namenode -format
Start HDFS: start-dfs.sh
Start YARN: start-all.sh
start-all.sh equivalent start-dfs.sh + start-yarn.sh