[ https://issues.apache.org/jira/browse/AVRO-2126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17006288#comment-17006288 ]
Jason Kososki commented on AVRO-2126: ------------------------------------- [~nbhav] I was running into the same problem and was able to resolve by dropping the first five bytes of msg.value() I was following the solution from this post: https://stackoverflow.com/questions/44407780/how-to-decode-deserialize-kafka-avro-strings-with-python I modified the line {code:python} msg_value = msg.value() {code} to {code:python} msg_value = msg.value()[5:] {code} Also -- a good post that helped me understand the format of the avro message: https://stackoverflow.com/questions/31204201/apache-kafka-with-avro-and-schema-repo-where-in-the-message-does-the-schema-id > avro.io.SchemaResolutionException: Can't access branch index 36 for union > with 2 branches > ----------------------------------------------------------------------------------------- > > Key: AVRO-2126 > URL: https://issues.apache.org/jira/browse/AVRO-2126 > Project: Apache Avro > Issue Type: Bug > Components: python > Affects Versions: 1.8.2 > Environment: Python 3.5.2, avro-python3 1.8.2 > Reporter: Jurgis Pods > Priority: Major > > I get the following error when decoding messages from Kafka via avro-python3: > {code} > avro.io.SchemaResolutionException: Can't access branch index 36 for union > with 2 branches > Writer's Schema: [ > "null", > "string" > ] > Reader's Schema: [ > "null", > "string" > ] > {code} > Relevant code producing this error: > {code} > import avro.schema > import avro.io > import io > def parse_avro(value, schema): > bytes_reader = io.BytesIO(value) > decoder = avro.io.BinaryDecoder(bytes_reader) > reader = avro.io.DatumReader(schema) > return reader.read(decoder) > # msg: Message from Kafka, schema: avro.schema.Schema from Confluent Schema > Registry > parse_avro(msg.value, avro_schema) > {code} > I have no idea where the number 36 might come from. -- This message was sent by Atlassian Jira (v8.3.4#803005)