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https://issues.apache.org/jira/browse/FLINK-2747?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aljoscha Krettek reassigned FLINK-2747:
---------------------------------------
Assignee: (was: Aljoscha Krettek)
> TypeExtractor does not correctly analyze Scala Immutables (AnyVal)
> ------------------------------------------------------------------
>
> Key: FLINK-2747
> URL: https://issues.apache.org/jira/browse/FLINK-2747
> Project: Flink
> Issue Type: Bug
> Components: Type Serialization System
> Affects Versions: 0.10.0, 1.0.0
> Reporter: Aljoscha Krettek
> Fix For: 1.0.0
>
>
> This example program only works correctly if Kryo is force-enabled.
> {code}
> object Test {
> class Id(val underlying: Int) extends AnyVal
> class X(var id: Id) {
> def this() { this(new Id(0)) }
> }
> class MySource extends SourceFunction[X] {
> def run(ctx: SourceFunction.SourceContext[X]) {
> ctx.collect(new X(new Id(1)))
> }
> def cancel() {}
> }
> def main(args: Array[String]) {
> val env = StreamExecutionContext.getExecutionContext
> env.addSource(new MySource).print
> env.execute("Test")
> }
> }
> {code}
> The program fails with this:
> {code}
> Caused by: java.lang.RuntimeException: Cannot instantiate class.
> at
> org.apache.flink.api.java.typeutils.runtime.PojoSerializer.createInstance(PojoSerializer.java:227)
> at
> org.apache.flink.api.java.typeutils.runtime.PojoSerializer.deserialize(PojoSerializer.java:421)
> at
> org.apache.flink.streaming.runtime.streamrecord.StreamRecordSerializer.deserialize(StreamRecordSerializer.java:110)
> at
> org.apache.flink.streaming.runtime.streamrecord.StreamRecordSerializer.deserialize(StreamRecordSerializer.java:41)
> at
> org.apache.flink.runtime.plugable.NonReusingDeserializationDelegate.read(NonReusingDeserializationDelegate.java:55)
> at
> org.apache.flink.runtime.io.network.api.serialization.SpillingAdaptiveSpanningRecordDeserializer.getNextRecord(SpillingAdaptiveSpanningRecordDeserializer.java:125)
> at
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:136)
> at
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:55)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:198)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:579)
> at java.lang.Thread.run(Thread.java:745)
> {code}
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