Jamie Grier created FLINK-3617:
----------------------------------
Summary: NPE from CaseClassSerializer when dealing with null
Option field
Key: FLINK-3617
URL: https://issues.apache.org/jira/browse/FLINK-3617
Project: Flink
Issue Type: Bug
Components: Core
Affects Versions: 1.0.0
Reporter: Jamie Grier
This error occurs when serializing a Scala case class with an field of Option[]
type where the value is not Some or None, but null.
If this is not supported we should have a good error message.
java.lang.RuntimeException: ConsumerThread threw an exception: null
at
org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer09.run(FlinkKafkaConsumer09.java:336)
at
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:78)
at
org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:56)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:224)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException
at
org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:81)
at
org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:39)
at
org.apache.flink.streaming.api.operators.StreamSource$NonTimestampContext.collect(StreamSource.java:158)
at
org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer09$ConsumerThread.run(FlinkKafkaConsumer09.java:473)
Caused by: java.lang.NullPointerException
at
org.apache.flink.api.scala.typeutils.CaseClassSerializer.serialize(CaseClassSerializer.scala:100)
at
org.apache.flink.api.scala.typeutils.CaseClassSerializer.serialize(CaseClassSerializer.scala:30)
at
org.apache.flink.api.scala.typeutils.CaseClassSerializer.serialize(CaseClassSerializer.scala:100)
at
org.apache.flink.api.scala.typeutils.CaseClassSerializer.serialize(CaseClassSerializer.scala:30)
at
org.apache.flink.streaming.runtime.streamrecord.StreamRecordSerializer.serialize(StreamRecordSerializer.java:107)
at
org.apache.flink.streaming.runtime.streamrecord.StreamRecordSerializer.serialize(StreamRecordSerializer.java:42)
at
org.apache.flink.runtime.plugable.SerializationDelegate.write(SerializationDelegate.java:56)
at
org.apache.flink.runtime.io.network.api.serialization.SpanningRecordSerializer.addRecord(SpanningRecordSerializer.java:79)
at
org.apache.flink.runtime.io.network.api.writer.RecordWriter.emit(RecordWriter.java:84)
at
org.apache.flink.streaming.runtime.io.StreamRecordWriter.emit(StreamRecordWriter.java:86)
at
org.apache.flink.streaming.runtime.io.RecordWriterOutput.collect(RecordWriterOutput.java:78)
... 3 more
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
