Mark Payne created NIFI-4046:
--------------------------------
Summary: ConsumeKafkaRecord can throw NPE if using an Avro Reader
and data on topic is missing a required field
Key: NIFI-4046
URL: https://issues.apache.org/jira/browse/NIFI-4046
Project: Apache NiFi
Issue Type: Bug
Components: Extensions
Reporter: Mark Payne
Assignee: Mark Payne
I am using PublishKafkaRecord to push some data to a Kafka topic using the Avro
writer. I not embedding the Avro schema in the content but rather using a
Schema Registry.
I then have a ConsumeKafkaRecord that pulls that Avro data, but is using a
Schema that has an extra field, which is not present in the data. As a result,
I get a NullPointerException when trying to pull data from Kafka:
{code}
2017-06-08 14:54:12,499 ERROR [Timer-Driven Process Thread-22]
o.a.n.p.k.pubsub.ConsumeKafkaRecord_0_10
ConsumeKafkaRecord_0_10[id=84480f03-015c-1000-4aab-9a035812bb86] Exception
while processing data from kafka so will close the lease
org.apache.nifi.processors.kafka.pubsub.ConsumerPool$SimpleConsumerLease@6c39d011
due to org.apache.nifi.processor.exception.ProcessException:
java.lang.NullPointerException:
org.apache.nifi.processor.exception.ProcessException:
java.lang.NullPointerException
org.apache.nifi.processor.exception.ProcessException:
java.lang.NullPointerException
at
org.apache.nifi.processors.kafka.pubsub.ConsumerLease.writeRecordData(ConsumerLease.java:514)
at
org.apache.nifi.processors.kafka.pubsub.ConsumerLease.lambda$processRecords$2(ConsumerLease.java:320)
at java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1540)
at
java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:580)
at
org.apache.nifi.processors.kafka.pubsub.ConsumerLease.processRecords(ConsumerLease.java:307)
at
org.apache.nifi.processors.kafka.pubsub.ConsumerLease.poll(ConsumerLease.java:168)
at
org.apache.nifi.processors.kafka.pubsub.ConsumeKafkaRecord_0_10.onTrigger(ConsumeKafkaRecord_0_10.java:327)
at
org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
at
org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1120)
at
org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
at
org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
at
org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException: null
at
org.apache.nifi.processors.kafka.pubsub.ConsumerLease.writeRecordData(ConsumerLease.java:458)
... 18 common frames omitted
{code}
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