Hello, While going thorough the API for GenericDatumReader, I came across this read[1] method and it wasn't immediately clear to me as to what the "reuse" of the datum really means.
So for instance if I have an evolving schema, should this datum be created from the readerSchema or the writerSchema. So something like: record = new GenericData.Record(readerSchema); // created with readerSchema GenericDatumReader<GenericRecord> gdr = newGenericDatumReader<GenericRecord>(writerSchema, readerSchema); record = gdr.read(record, binaryDecoder); Or is it better to simply leave it off as null? record = gdr.read(null, binaryDecoder); Thanks, [1] http://avro.apache.org/docs/1.7.4/api/java/org/apache/avro/generic/GenericDatumReader.html#read(D, org.apache.avro.io.Decoder)
