[jira] [Created] (BEAM-2303) Add SpecificData to AvroCoder

["Arvid Heise (JIRA)" <ji...@apache.org>]

Arvid Heise created BEAM-2303:
---------------------------------

             Summary: Add SpecificData to AvroCoder
                 Key: BEAM-2303
                 URL: https://issues.apache.org/jira/browse/BEAM-2303
             Project: Beam
          Issue Type: Improvement
          Components: sdk-java-core
    Affects Versions: 2.1.0
            Reporter: Arvid Heise
            Assignee: Davor Bonaci


The AvroCoder currently supports GenericData and ReflectData, but not SpecificData.

It should relatively easy to incorporate it by expanding the logic while constructing the Reader and Writer by also checking if the type implements the SpecificRecord interface. It would greatly speed up (de-)serialization of Avro-generated java classes.

{code}
            return myCoder.getType().equals(GenericRecord.class)
                ? new GenericDatumReader<T>(myCoder.getSchema())
                : new ReflectDatumReader<T>(
                    myCoder.getSchema(), myCoder.getSchema(), myCoder.reflectData.get());
{code}

should be


{code}
                        if (myCoder.getType().equals(GenericRecord.class)) {
                            return new GenericDatumReader<T>(myCoder.getSchema());
                        }
                        if (SpecificRecord.class.isAssignableFrom(myCoder.getType())) {
                            return new SpecificDatumReader<T>(myCoder.getType());
                        }
                        return new ReflectDatumReader<T>(
                                myCoder.getSchema(), myCoder.getSchema(), myCoder.reflectData.get());
{code}



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