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https://issues.apache.org/jira/browse/FLINK-4645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15507285#comment-15507285
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Greg Hogan commented on FLINK-4645:
-----------------------------------
{{registerTypeWithKryoSerializer}} is in the public API. Is this not a breaking
change?
> Hard to register Kryo Serializers due to generics
> -------------------------------------------------
>
> Key: FLINK-4645
> URL: https://issues.apache.org/jira/browse/FLINK-4645
> Project: Flink
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.2
> Reporter: Stephan Ewen
> Assignee: Stephan Ewen
> Fix For: 1.2.0
>
>
> It currently does not work to do this:
> {code}
> env.registerTypeWithKryoSerializer(TreeMultimap.class, JavaSerializer.class);
> {code}
> instead on needs to do that:
> {code}
> env.registerTypeWithKryoSerializer(TreeMultimap.class, (Class<? extends
> Serializer<?>>) JavaSerializer.class);
> {code}
> The fix would be to change the signature of the environment method from
> {code}
> public void registerTypeWithKryoSerializer(Class<?> type, Class<? extends
> Serializer<?>> serializerClass)
> {code}
> to
> {code}
> public void registerTypeWithKryoSerializer(Class<?> type, Class<? extends
> Serializer> serializerClass)
> {code}
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