GitHub user aljoscha opened a pull request:

    [FLINK-4852] Remove Non-Multiplexing StreamRecordSerializer

    This is getting rid of a source `ClassCastExceptions` that cropped up 
several times now. We simply always to the multiplexing now which adds the cost 
of transmitting one byte to every element we transmit.
    R: @mxm and @StephanEwen 

You can merge this pull request into a Git repository by running:

    $ git pull remove-stream-record-serializer

Alternatively you can review and apply these changes as the patch at:

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2656
commit 87fd6b6d824c03f2ff6591af8ae28a9b6e65296b
Author: Aljoscha Krettek <>
Date:   2016-10-18T16:32:17Z

    [FLINK-4852] Remove Non-Multiplexing StreamRecordSerializer
    This also renames MultiplexingStreamRecordSerializer to


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