How to start Hadoop,
user@user-G31M-ES2L:/usr/local/hadoop/bin$./start-all.sh
How to stop Hadoop,
user@user-G31M-ES2L:/usr/local/hadoop/bin$./stop-all.sh
How to place files in HDFS,
user@user-G31M-ES2L:~$ hadoop dfs -put filename.csv /tmp/hdfsdir/
How to check hadoop processes status:
user@user-G31M-ES2L:~$/usr/local/hadoop$ jps
3423 TaskTracker
3217 JobTracker
2674 NameNode
4511 Jps
3555 RunJar
3122 SecondaryNameNode
2909 DataNode
4381 RunJar
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