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re: Installing and Running Hadoop and Spark on Windows VIEW POST

FULL DISCUSSION
 

Hello Andrew,

Thank you so much for your tutorial. I just have some questions hope you can help:

  • after running start-dfs.cmd and start-yarn.cmd in cmd (boot HDFS step) I noticed that the yarn is working fine but NameNode and DataNode started for a few secs and then both stopped working for some reasons. Any idea what might cause this issue?

  • during the setting path process, I couldn't run the command: hdfs -version (I cd out to C:/User but I still have the same error Error: Could not find or load main class Last Name) so I edit /etc/hadoop/hadoop-env.cmd and change this line:

set HADOOP_IDENT_STRING=%USERNAME%

to

set HADOOP_IDENT_STRING=myuser

This allows me to do hdfs -version but I don't know this change will affect anything or not could you please clarify? Is this change make my NameNode and DataNode not working

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