Hi Everyone,
In our use-case we encode avro pojo to byteArray and then push it to Kafka,
but when I am trying to decode this with slightly updated avro pojo (only
one new Double field is added with default value 0), I am
getting ArrayIndexOutOfBoundException.
Now I know this might be expected as we are not transferring avro schema in
any header, so the exception might be legit.
But I do not want any down time in my system and want to deploy my changes
with new pojo. Is there any way I can do that.
For reference... Our Utility class for encoding/decoding
import org.apache.avro.file.SeekableByteArrayInput;
import org.apache.avro.io.BinaryDecoder;
import org.apache.avro.io.BinaryEncoder;
import org.apache.avro.io.DecoderFactory;
import org.apache.avro.io.EncoderFactory;
import org.apache.avro.specific.SpecificDatumReader;
import org.apache.avro.specific.SpecificDatumWriter;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
public class AvroUtils {
public static <C> byte[] encode(C value, Class<C> c) throws IOException {
ByteArrayOutputStream byteArrayOutputStream = new
ByteArrayOutputStream();
BinaryEncoder binaryEncoder =
EncoderFactory.get().binaryEncoder(byteArrayOutputStream, null);
SpecificDatumWriter<C> datumWriter = new SpecificDatumWriter<>(c);
datumWriter.write(value, binaryEncoder);
binaryEncoder.flush();
return byteArrayOutputStream.toByteArray();
}
public static <C> C decode(byte[] byteArray, Class<C> c) throws
IOException {
SeekableByteArrayInput byteArrayInputStream = new
SeekableByteArrayInput(byteArray);
BinaryDecoder binaryDecoder =
DecoderFactory.get().binaryDecoder(byteArrayInputStream, null);
SpecificDatumReader<C> datumReader = new SpecificDatumReader<>(c);
return datumReader.read(null, binaryDecoder);
}
}
Avro version - 1.7.7
*Regards,*
*Prateek Rajput* <prateek.raj...@flipkart.com>
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