Mingliang Liu created HADOOP-13697:
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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.
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