Github user stanlyxiang commented on a diff in the pull request:

    https://github.com/apache/incubator-hawq/pull/1081#discussion_r95528917
  
    --- Diff: src/backend/libpq/rangerrest.c ---
    @@ -68,51 +69,99 @@ static void getClientIP(char *remote_host)
        }
     }
     
    -RangerACLResult parse_ranger_response(char* buffer)
    +/*
    + * parse ranger response
    + * @param  buffer  ranger response         
    + * @param  result_list             List of RangerPrivilegeResults
    + * @return 0 parse success; -1 other error
    + */
    +static int parse_ranger_response(char* buffer, List *result_list)
     {
        if (buffer == NULL || strlen(buffer) == 0)
    -           return RANGERCHECK_UNKNOWN;
    +           return -1;
    --- End diff --
    
    I don't think -1 is more readable than "RANGERCHECK_UNKNOWN".


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