hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3665) WritableComparator newKey() fails for NullWritable
Date Tue, 01 Jul 2008 10:57:45 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12609522#action_12609522
] 

Hadoop QA commented on HADOOP-3665:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12385023/3665-1.patch
  against trunk revision 672976.

    +1 @author.  The patch does not contain any @author tags.

    +1 tests included.  The patch appears to include 3 new or modified tests.

    +1 javadoc.  The javadoc tool did not generate any warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    +1 findbugs.  The patch does not introduce any new Findbugs warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed core unit tests.

    -1 contrib tests.  The patch failed contrib unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2776/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2776/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2776/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/2776/console

This message is automatically generated.

> WritableComparator newKey() fails for NullWritable
> --------------------------------------------------
>
>                 Key: HADOOP-3665
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3665
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.16.0
>         Environment: n/a
>            Reporter: Lukas Vlcek
>            Priority: Minor
>             Fix For: 0.19.0
>
>         Attachments: 3665-0.patch, 3665-1.patch, HADOOP-3665.path
>
>
> It is not possible to use NullWritable as a key in order to suppress key value in output.
> Syndrome exception:
> Caused by: java.lang.IllegalAccessException: Class org.apache.hadoop.io.WritableComparator
can not access a member of class org.apache.hadoop.io.NullWritable with modifiers "private"
> The problem is that NullWritable is a singleton and does not provide public non-parametric
constructor. The following code in WritableComparator causes the exception: return (WritableComparable)keyClass.newInstance();
> Proposed simple solution is to use ReflectionUtils instead (it requires modification
as well).
> This issue is probably related to HADOOP-2922

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message