[jira] [Created] (HADOOP-13697) LogLevel#main throws exception if no arguments provided

["Mingliang Liu (JIRA)" <ji...@apache.org>]

Mingliang Liu created HADOOP-13697:
--------------------------------------

             Summary: LogLevel#main throws exception if no arguments provided
                 Key: HADOOP-13697
                 URL: https://issues.apache.org/jira/browse/HADOOP-13697
             Project: Hadoop Common
          Issue Type: Bug
    Affects Versions: 2.9.0
            Reporter: Mingliang Liu
            Assignee: Mingliang Liu


{code}
root@b9ab37566005:/# hadoop daemonlog

Usage: General options are:
	[-getlevel <host:port> <classname> [-protocol (http|https)]
	[-setlevel <host:port> <classname> <level> [-protocol (http|https)]

Exception in thread "main" org.apache.hadoop.HadoopIllegalArgumentException: No arguments specified
	at org.apache.hadoop.log.LogLevel$CLI.parseArguments(LogLevel.java:138)
	at org.apache.hadoop.log.LogLevel$CLI.run(LogLevel.java:106)
	at org.apache.hadoop.log.LogLevel.main(LogLevel.java:70)
{code}

I think we can catch the exception in the main method, and dump a log error message instead of throw the stack which may frustrate users.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: common-dev-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-dev-help@hadoop.apache.org