Sean Owen created MAHOUT-1291:
---------------------------------
Summary: MahoutDriver yields cosmetically suboptimal exception
when bin/mahout runs without args, on some Hadoop versions
Key: MAHOUT-1291
URL: https://issues.apache.org/jira/browse/MAHOUT-1291
Project: Mahout
Issue Type: Improvement
Affects Versions: 0.8
Reporter: Sean Owen
Priority: Trivial
Fix For: 0.9
Attachments: MAHOUT-1291.patch
If you run bin/mahout without arguments, an error is correctly displayed about
lack of an argument. The part that displays the error is actually within Hadoop
code. In some versions of Hadoop, in the error case, it will quit the JVM with
System.exit(). In others, it does not.
In the calling code in MahoutDriver, in this error case, the main() method does
not actually return. So, for versions where Hadoop code doesn't immediately
exit the JVM, execution continues. This yields another exception. It's pretty
harmless but ugly.
Attached is a one-line fix, to return from main() in the error case, which is
more correct to begin with.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
