4. Hadoop streaming jobs issue with WebHCat

Solution:

Check if the file /user/webhcat/hadoop-streaming.jar exists on HDFS:
```
su - webhcat
hadoop dfs -ls /user/webhcat/hadoop-streaming.jar
```

If the above command fails, copy the Hadoop streaming JAR file:

su - webhcat
            
/usr/bin/hadoop --config ${hadoopconfdir} fs -copyFromLocal  /usr/share/hadoop/contrib/streaming/hadoop-streaming*.jar /user/webhcat/hadoop-streaming.jar

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