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[Issue]: NullPointerException for enum type

See original GitHub issue

What happened?

When I try so send a message with an enum I get an error. All the other fields work fine.

The Schema is: { "type": "record", "name": "MyFruitsValue", "namespace": "de.mycomp.avro.model", "fields": [ { "name": "aggregateAttribute", "type": { "type": "record", "name": "AggregateAttribute", "fields": [ { "name": "fruitList", "type": [ "null", { "type": "record", "name": "FruitList", "fields": [ { "name": "fruits", "type": [ "null", { "type": "array", "items": { "type": "record", "name": "Fruit", "fields": [ { "name": "fruitType", "type": [ "null", { "type": "enum", "name": "FruitType", "symbols": [ "MY_ENUM_1", "MY_ENUM_2", "MY_ENUM_3" ] } ], "default": null } ] } } ], "default": null } ] } ], "default": null } ] } } ] }

Maybe also of interest, loading the subject doesn’t work for the most fields. Only the top level elements get loaded correctly, the other elements (everything below aggregateAttribute for example) don’t work, so I had to enter the fields manually. But like I said, it worked for everything (also for another object in fruits array) but not for the enum. jmx.zip

KloadGen Version

KLoadGen 4.8.1

Relevant log output

org.apache.kafka.common.errors.SerializationException: Error serializing Avro message
	at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.serializeImpl(AbstractKafkaAvroSerializer.java:154) ~[kloadgen-4.8.1.jar:?]
	at io.confluent.kafka.serializers.KafkaAvroSerializer.serialize(KafkaAvroSerializer.java:61) ~[kloadgen-4.8.1.jar:?]
	at org.apache.kafka.common.serialization.Serializer.serialize(Serializer.java:62) ~[kloadgen-4.8.1.jar:?]
	at org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:945) ~[kloadgen-4.8.1.jar:?]
	at org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:905) ~[kloadgen-4.8.1.jar:?]
	at net.coru.kloadgen.sampler.KafkaSchemaSampler.runTest(KafkaSchemaSampler.java:164) [kloadgen-4.8.1.jar:?]
	at org.apache.jmeter.protocol.java.sampler.JavaSampler.sample(JavaSampler.java:197) [ApacheJMeter_java.jar:5.4.1]
	at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:638) [ApacheJMeter_core.jar:5.4.1]
	at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:558) [ApacheJMeter_core.jar:5.4.1]
	at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:489) [ApacheJMeter_core.jar:5.4.1]
	at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:256) [ApacheJMeter_core.jar:5.4.1]
	at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.NullPointerException: null of de.mycomp.avro.model.FruitType of union in field fruitType of de.mycomp.avro.model.Fruit of array of union in field fruits of de.mycomps.avro.model.FruitList of union in field fruitList of de.mycomp.avro.model.AggregateAttribute in field aggregateAttribute of de.mycomp.avro.model.MyFruitsValue
	at org.apache.avro.generic.GenericDatumWriter.npe(GenericDatumWriter.java:184) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:178) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73) ~[kloadgen-4.8.1.jar:?]
	at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.writeDatum(AbstractKafkaAvroSerializer.java:168) ~[kloadgen-4.8.1.jar:?]
	at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.serializeImpl(AbstractKafkaAvroSerializer.java:146) ~[kloadgen-4.8.1.jar:?]
	... 11 more
Caused by: java.lang.NullPointerException
	at org.apache.avro.Schema$EnumSchema.getEnumOrdinal(Schema.java:1060) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeEnum(GenericDatumWriter.java:242) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:134) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:145) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:221) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:210) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:131) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeArray(GenericDatumWriter.java:257) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:137) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:145) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:221) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:210) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:131) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:145) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:221) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:210) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:131) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:221) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:210) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.writeWithoutConversion(GenericDatumWriter.java:131) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:83) ~[kloadgen-4.8.1.jar:?]
	at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:73) ~[kloadgen-4.8.1.jar:?]
	at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.writeDatum(AbstractKafkaAvroSerializer.java:168) ~[kloadgen-4.8.1.jar:?]
	at io.confluent.kafka.serializers.AbstractKafkaAvroSerializer.serializeImpl(AbstractKafkaAvroSerializer.java:146) ~[kloadgen-4.8.1.jar:?]
	... 11 more

Have you added your JMX Testplan or a replica?

  • I have added a JMX testplan

Have you added your Schema or a replica?

  • I have added the Schema

Issue Analytics

  • State:closed
  • Created a year ago
  • Comments:10 (1 by maintainers)

github_iconTop GitHub Comments

1reaction
jemacineirascommented, Jul 21, 2022

@Perry45, my apologies, push didn’t reach out. Now you should have them. Cheers

0reactions
Perry45commented, Jul 21, 2022

@jemacineiras WOW. It works! Great. Thank you, for your the fix 😃

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