ASF GitHub Bot commented on FLINK-6022:

Github user shashank734 commented on the issue:

    @StephanEwen Are these changes part of 1.5 or 1.4, Do you have any example 
how I can use this with states and CEP? Please give me some hint. I have seen 
test cases of Input and Output only. State evolution is the main issue for us 

> Don't serialise Schema when serialising Avro GenericRecord
> ----------------------------------------------------------
>                 Key: FLINK-6022
>                 URL: https://issues.apache.org/jira/browse/FLINK-6022
>             Project: Flink
>          Issue Type: Improvement
>          Components: Type Serialization System
>            Reporter: Robert Metzger
>            Assignee: Stephan Ewen
>            Priority: Major
>             Fix For: 1.5.0
> Currently, Flink is serializing the schema for each Avro GenericRecord in the 
> stream.
> This leads to a lot of overhead over the wire/disk + high serialization costs.
> Therefore, I'm proposing to improve the support for GenericRecord in Flink by 
> shipping the schema to each serializer  through the AvroTypeInformation.
> Then, we can only support GenericRecords with the same type per stream, but 
> the performance will be much better.

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