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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-8362) Improve exception message when Configuration.set() is called with a null key or value
Date Fri, 18 May 2012 14:37:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-8362?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13278832#comment-13278832

Harsh J commented on HADOOP-8362:


Thanks for the patches!

Some comments from my side:
- Better to use IllegalArgumentException instead of the raw RuntimeException.
- Perhaps we can check for this very early (first step) into the set() call. Perhaps better
to be done via Guava's http://google-collections.googlecode.com/svn/trunk/javadoc/com/google/common/base/Preconditions.html#checkArgument(boolean,%20java.lang.Object)
call, rather than duplicating code. We already have Guava added in as a dependency, makes
sense to leverage it where we can for its free benefits.
- Please also document the behavior of sending in nulls inside the set call's javadocs, so
users can benefit from it (by knowing what to expect).
- Test is good, but also good to assert that the exception object is the right one, and that
the message is proper. Helps avoid regressions in future.
> Improve exception message when Configuration.set() is called with a null key or value
> -------------------------------------------------------------------------------------
>                 Key: HADOOP-8362
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8362
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 2.0.0
>            Reporter: Todd Lipcon
>            Priority: Trivial
>              Labels: newbie
>         Attachments: HADOOP-8362-1.patch, HADOOP-8362.patch
> Currently, calling Configuration.set(...) with a null value results in a NullPointerException
within Properties.setProperty. We should check for null key/value and throw a better exception.

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