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From "Chris K Wensel (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4466) SequenceFileOutputFormat is coupled to WritableComparable and Writable
Date Wed, 22 Oct 2008 07:12:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12641731#action_12641731
] 

Chris K Wensel commented on HADOOP-4466:
----------------------------------------

via ant test-patch

     [exec] +1 overall.  
     [exec] 
     [exec]     +1 @author.  The patch does not contain any @author tags.
     [exec] 
     [exec]     +1 tests included.  The patch appears to include 3 new or modified tests.
     [exec] 
     [exec]     +1 javadoc.  The javadoc tool did not generate any warning messages.
     [exec] 
     [exec]     +1 javac.  The applied patch does not increase the total number of javac compiler
warnings.
     [exec] 
     [exec]     +1 findbugs.  The patch does not introduce any new Findbugs warnings.

> SequenceFileOutputFormat is coupled to WritableComparable and Writable
> ----------------------------------------------------------------------
>
>                 Key: HADOOP-4466
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4466
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: io
>    Affects Versions: 0.19.0
>            Reporter: Chris K Wensel
>         Attachments: hadoop-4466.patch
>
>
> For some reason SequenceFileOutputFormat calls asSubclass() for OutputKeyClass and OutputValueClass.
This throws a ClassCastException when using non-Writable types with the new Serialization
framework.

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