new AvroColumnWriter<GenericRecord>(writer, new ColumnFileMetaData());
acw.write(writtenRecord);
File serializedTrevni = File.createTempFile("trevni", null);
acw.writeTo(serializedTrevni);
AvroColumnReader.Params params = new Params(serializedTrevni);
params.setSchema(evolved);
AvroColumnReader<GenericRecord> acr =
new AvroColumnReader<GenericRecord>(params);
GenericRecord readRecord = acr.next();
assertEquals(evolvedRecord, readRecord);
assertFalse(acr.hasNext());