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Posted to issues@flink.apache.org by "Ufuk Celebi (JIRA)" <ji...@apache.org> on 2017/02/21 18:13:44 UTC

[jira] [Created] (FLINK-5876) Mention Scala type fallacies for queryable state client serializers

Ufuk Celebi created FLINK-5876:
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             Summary: Mention Scala type fallacies for queryable state client serializers
                 Key: FLINK-5876
                 URL: https://issues.apache.org/jira/browse/FLINK-5876
             Project: Flink
          Issue Type: Improvement
          Components: Documentation
            Reporter: Ufuk Celebi


FLINK-5801 shows a very hard to debug issue when querying state from the Scala API that can result in serializer mismatches between the client and the job.

We should mention that the type serializers should be created via the Scala macros.

{code}
import org.apache.flink.streaming.api.scala._
...
val keySerializer = createTypeInformation[Long].createSerializer(new ExecutionConfig)
{code}




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