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https://issues.apache.org/jira/browse/FLINK-2684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14747205#comment-14747205
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Aljoscha Krettek commented on FLINK-2684:
-----------------------------------------
For the Table API to work we would only need to move the code generation to the
pre-flight phase, ship the code as a string, and then compile it at runtime
using Janino.
Right now, both the code generation and compilation happen at runtime.
> Make TypeInformation non-serializable again by removing Table API's need for
> it
> -------------------------------------------------------------------------------
>
> Key: FLINK-2684
> URL: https://issues.apache.org/jira/browse/FLINK-2684
> Project: Flink
> Issue Type: Improvement
> Components: Table API
> Reporter: Till Rohrmann
> Priority: Minor
>
> Currently, the {{TypeInformations}} must be serializable because they are
> shipped with UDFs of the Table API to the TMs. There the Table API code is
> generated and compiled. By generating the code on the client and shipping the
> code as strings, we could get rid of this dependency. As a consequence, the
> {{TypeInformations}} can be non-serializable again, as they were intended to
> be.
> Maybe [~aljoscha] can provide some more implementation details here.
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