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https://issues.apache.org/jira/browse/FLINK-2194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14580280#comment-14580280
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ASF GitHub Bot commented on FLINK-2194:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/flink/pull/814


> Type extractor does not support Writable type
> ---------------------------------------------
>
>                 Key: FLINK-2194
>                 URL: https://issues.apache.org/jira/browse/FLINK-2194
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>
> The type extractor supports sub types of {{Writable}} but not {{Writable}} 
> itself. The reason is that it wants to create a {{WritableTypeInfo}} which is 
> not possible for the interface {{Writable}}, though. A solution would be to 
> treat the {{Writable}} interface like a generic type. 



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