4. Set Up HDFS User and Prepare WebHCat Directories On HDFS

Set up the WebHCat user.

Login as $HDFS_USER
hadoop fs -mkdir /user/$WEBHCAT_USER 
hadoop fs -chown -R $WEBHCAT_USER:$HDFS_USER /user/$WEBHCAT_USER 
hadoop fs -mkdir /apps/webhcat

Prepare WebHCat directories on HDFS.

hdfs dfs -copyFromLocal /usr/share/HDP-webhcat/pig.tar.gz /apps/webhcat/
hdfs dfs -copyFromLocal /usr/share/HDP-webhcat/hive.tar.gz /apps/webhcat/
hdfs dfs -copyFromLocal /usr/lib/hadoop-mapreduce/hadoop-streaming*.jar /apps/webhcat/

Set appropriate permissions for the HDFS user and the webhcat directory.
```
hadoop fs -chown -R $WEBHCAT_USER:users /apps/webhcat 
hadoop fs -chmod -R 755 /apps/webhcat
```
where:
- $HDFS_USER is the user owning the HDFS services. For example, hdfs.
- $WEBHCAT_USER is the user owning the WebHCat services. For example, hcat.

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