Avro deserialize when producer and consumer schema differ
I am doing following in my program.
1. Consuming message (byte) from RabbitMQ. AVRO format is used to serialize data and then produce on the queue.
2. Once it’s consumed, deserialize in AVRO generated java object using deserialize method.
public T deserialize(String pTopic, byte pData) {
T lResult = null;
if (pData != null) {
DatumReader<GenericRecord> lDatumReader = new SpecificDatumReader<>(targetType.newInstance().getSchema());
Decoder lDecoder = DecoderFactory.get().binaryDecoder(pData, null);
lResult = (T) lDatumReader.read(null, lDecoder);
}
return lResult;
}
It works fine when I have same schema both side. If there is change in the producer side add / delete some field or property, it’s not able to deserialize and throws exception.
Is there any way that I can ignore change of / in schema in the consumer side?
My old schema is enough for my processing.
Thanks in advance
avro
asked Nov 12 '18 at 13:58
Baldeep Singh
111
add a comment |
I am doing following in my program.
1. Consuming message (byte) from RabbitMQ. AVRO format is used to serialize data and then produce on the queue.
2. Once it’s consumed, deserialize in AVRO generated java object using deserialize method.
public T deserialize(String pTopic, byte pData) {
T lResult = null;
if (pData != null) {
DatumReader<GenericRecord> lDatumReader = new SpecificDatumReader<>(targetType.newInstance().getSchema());
Decoder lDecoder = DecoderFactory.get().binaryDecoder(pData, null);
lResult = (T) lDatumReader.read(null, lDecoder);
}
return lResult;
}
It works fine when I have same schema both side. If there is change in the producer side add / delete some field or property, it’s not able to deserialize and throws exception.
Is there any way that I can ignore change of / in schema in the consumer side?
My old schema is enough for my processing.
Thanks in advance
avro
asked Nov 12 '18 at 13:58
Baldeep Singh
111
add a comment |
I am doing following in my program.
1. Consuming message (byte) from RabbitMQ. AVRO format is used to serialize data and then produce on the queue.
2. Once it’s consumed, deserialize in AVRO generated java object using deserialize method.
public T deserialize(String pTopic, byte pData) {
T lResult = null;
if (pData != null) {
DatumReader<GenericRecord> lDatumReader = new SpecificDatumReader<>(targetType.newInstance().getSchema());
Decoder lDecoder = DecoderFactory.get().binaryDecoder(pData, null);
lResult = (T) lDatumReader.read(null, lDecoder);
}
return lResult;
}
It works fine when I have same schema both side. If there is change in the producer side add / delete some field or property, it’s not able to deserialize and throws exception.
Is there any way that I can ignore change of / in schema in the consumer side?
My old schema is enough for my processing.
Thanks in advance
avro
asked Nov 12 '18 at 13:58
Baldeep Singh
111
I am doing following in my program.
1. Consuming message (byte) from RabbitMQ. AVRO format is used to serialize data and then produce on the queue.
2. Once it’s consumed, deserialize in AVRO generated java object using deserialize method.
public T deserialize(String pTopic, byte pData) {
T lResult = null;
if (pData != null) {
DatumReader<GenericRecord> lDatumReader = new SpecificDatumReader<>(targetType.newInstance().getSchema());
Decoder lDecoder = DecoderFactory.get().binaryDecoder(pData, null);
lResult = (T) lDatumReader.read(null, lDecoder);
}
return lResult;
}
It works fine when I have same schema both side. If there is change in the producer side add / delete some field or property, it’s not able to deserialize and throws exception.
Is there any way that I can ignore change of / in schema in the consumer side?
My old schema is enough for my processing.
Thanks in advance
avro
avro
asked Nov 12 '18 at 13:58
Baldeep Singh
111
asked Nov 12 '18 at 13:58
Baldeep Singh
111
asked Nov 12 '18 at 13:58
Baldeep Singh
111
asked Nov 12 '18 at 13:58
Baldeep Singh
111
asked Nov 12 '18 at 13:58
Baldeep Singh
111
111
add a comment |
add a comment |
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