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https://issues.apache.org/jira/browse/FLINK-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann closed FLINK-1178.
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Resolution: Fixed
Fixed in
https://github.com/apache/incubator-flink/commit/f2b8650e3968daf695af832470083afbc8d161b3
> Let ValueType and WritableType have preference over CaseClassType
> -----------------------------------------------------------------
>
> Key: FLINK-1178
> URL: https://issues.apache.org/jira/browse/FLINK-1178
> Project: Flink
> Issue Type: Improvement
> Reporter: Till Rohrmann
>
> It is currently not possible to define a case class in the Scala API with
> custom serialization logic. A CaseClassSerializer with the respective field
> serializers will be generated for each case class. This approach fails, if
> the case class contains a field which is not serializable. So currently, one
> has to provide a Wrapper inheriting from Value or Writable for this field in
> order to circumvent this problem. A more convenient solution would be to let
> the case class implement the Value or Writable interface and provide a
> serialization method for the whole case class. For that to work, case class
> which implement one of the afore mentioned interfaces have to be treated as
> those types by the TypeAnalyzer.
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