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https://issues.apache.org/jira/browse/HADOOP-8619?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13443174#comment-13443174
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Hudson commented on HADOOP-8619:
--------------------------------
Integrated in Hadoop-Mapreduce-trunk-Commit #2678 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk-Commit/2678/])
HADOOP-8619. WritableComparator must implement no-arg constructor.
Contributed by Chris Douglas. (Revision 1378120)
Result = FAILURE
suresh : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1378120
Files :
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/WritableComparator.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/io/serializer/TestWritableSerialization.java
> WritableComparator must implement no-arg constructor
> ----------------------------------------------------
>
> Key: HADOOP-8619
> URL: https://issues.apache.org/jira/browse/HADOOP-8619
> Project: Hadoop Common
> Issue Type: Improvement
> Components: io
> Affects Versions: 3.0.0
> Reporter: Radim Kolar
> Assignee: Chris Douglas
> Fix For: 0.23.0, 2.0.0-alpha, 3.0.0
>
> Attachments: 8619-0.patch, writable-comparator.txt
>
>
> Because of reasons listed here:
> http://findbugs.sourceforge.net/bugDescriptions.html#SE_COMPARATOR_SHOULD_BE_SERIALIZABLE
> comparators should be serializable. To make deserialization work, it is
> required that all superclasses have no-arg constructor.
> http://findbugs.sourceforge.net/bugDescriptions.html#SE_NO_SUITABLE_CONSTRUCTOR
> Simply add no=arg constructor to WritableComparator.
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