Github user merrimanr commented on the issue:

    https://github.com/apache/metron/pull/1166
  
    I validated this in full dev.  After full finishes building these are the 
HDFS permissions:
    ```
    [root@node1 vagrant]# hdfs dfs -ls /apps/metron/pcap
    Found 3 items
    drwxrwxr-x   - metron hadoop          0 2018-08-15 18:34 
/apps/metron/pcap/input
    drwxrwxr-x   - metron hadoop          0 2018-08-15 18:34 
/apps/metron/pcap/interim
    drwxrwxr-x   - metron hadoop          0 2018-08-15 18:34 
/apps/metron/pcap/output
    ```
    
    After Kerberos is enabled and REST is restarted, the permissions are:
    ```
    [root@node1 vagrant]# hdfs dfs -ls /apps/metron/pcap
    Found 3 items
    drwxr-xr-x   - metron hadoop          0 2018-08-15 18:34 
/apps/metron/pcap/input
    drwxr-xr-x   - metron hadoop          0 2018-08-15 18:34 
/apps/metron/pcap/interim
    drwxr-xr-x   - metron hadoop          0 2018-08-15 18:34 
/apps/metron/pcap/output
    ```


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