Francesco Guardiani created FLINK-24544:
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Summary: Failure when using Kafka connector in Table API with Avro
and Confluent schema registry
Key: FLINK-24544
URL: https://issues.apache.org/jira/browse/FLINK-24544
Project: Flink
Issue Type: Bug
Components: Connectors / Kafka, Formats (JSON, Avro, Parquet, ORC,
SequenceFile), Table SQL / Ecosystem
Affects Versions: 1.13.1
Reporter: Francesco Guardiani
Attachments: flink-deser-avro-enum.zip
A user reported in the [mailing
list|https://lists.apache.org/thread.html/re38a07f6121cc580737a20c11574719cfe554e58d99817f79db9bb4a%40%3Cuser.flink.apache.org%3E]
that Avro deserialization fails when using Kafka, Avro and Confluent Schema
Registry:
{code:java}
Caused by: java.io.IOException: Failed to deserialize Avro record.
at
org.apache.flink.formats.avro.AvroRowDataDeserializationSchema.deserialize(AvroRowDataDeserializationSchema.java:106)
at
org.apache.flink.formats.avro.AvroRowDataDeserializationSchema.deserialize(AvroRowDataDeserializationSchema.java:46)
at
org.apache.flink.api.common.serialization.DeserializationSchema.deserialize(DeserializationSchema.java:82)
at
org.apache.flink.streaming.connectors.kafka.table.DynamicKafkaDeserializationSchema.deserialize(DynamicKafkaDeserializationSchema.java:113)
at
org.apache.flink.streaming.connectors.kafka.internals.KafkaFetcher.partitionConsumerRecordsHandler(KafkaFetcher.java:179)
at
org.apache.flink.streaming.connectors.kafka.internals.KafkaFetcher.runFetchLoop(KafkaFetcher.java:142)
at
org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.run(FlinkKafkaConsumerBase.java:826)
at
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:110)
at
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:66)
at
org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:269)
Caused by: org.apache.avro.AvroTypeException: Found my.type.avro.MyEnumType,
expecting union
at org.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:308)
at org.apache.avro.io.parsing.Parser.advance(Parser.java:86)
at org.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:275)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:187)
at
org.apache.avro.generic.GenericDatumReader.readArray(GenericDatumReader.java:298)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:183)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:160)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:187)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:160)
at
org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:259)
at
org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:247)
at
org.apache.avro.generic.GenericDatumReader.readWithoutConversion(GenericDatumReader.java:179)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:160)
at
org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:153)
at
org.apache.flink.formats.avro.RegistryAvroDeserializationSchema.deserialize(RegistryAvroDeserializationSchema.java:81)
at
org.apache.flink.formats.avro.AvroRowDataDeserializationSchema.deserialize(AvroRowDataDeserializationSchema.java:103)
... 9 more
{code}
Look in the attached code for a reproducer
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