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Posted to common-issues@hadoop.apache.org by "Chris Douglas (JIRA)" <ji...@apache.org> on 2012/08/09 20:07:19 UTC
[jira] [Updated] (HADOOP-8619) WritableComparator must implement
no-arg constructor
[ https://issues.apache.org/jira/browse/HADOOP-8619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chris Douglas updated HADOOP-8619:
----------------------------------
Attachment: 8619-0.patch
> 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
> 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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