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https://issues.apache.org/jira/browse/FLINK-6318?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aljoscha Krettek updated FLINK-6318:
------------------------------------
Priority: Blocker (was: Critical)
> NFA serialisation doesn't work with TypeSerializers that load classes
> ---------------------------------------------------------------------
>
> Key: FLINK-6318
> URL: https://issues.apache.org/jira/browse/FLINK-6318
> Project: Flink
> Issue Type: Improvement
> Components: CEP
> Reporter: Aljoscha Krettek
> Priority: Blocker
> Fix For: 1.4.0
>
>
> This is from a user reported stack trace:
> {code}
> 04/12/2017 10:05:04 Job execution switched to status FAILING.
> java.lang.RuntimeException: Could not deserialize NFA.
> at org.apache.flink.cep.nfa.NFA$Serializer.deserialize(NFA.java:538)
> at org.apache.flink.cep.nfa.NFA$Serializer.deserialize(NFA.java:469)
> at
> org.apache.flink.contrib.streaming.state.RocksDBValueState.value(RocksDBValueState.java:81)
> at
> org.apache.flink.cep.operator.AbstractKeyedCEPPatternOperator.getNFA(AbstractKeyedCEPPatternOperator.java:124)
> at
> org.apache.flink.cep.operator.AbstractCEPBasePatternOperator.processElement(AbstractCEPBasePatternOperator.java:72)
> at
> org.apache.flink.cep.operator.AbstractKeyedCEPPatternOperator.processElement(AbstractKeyedCEPPatternOperator.java:162)
> at
> org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:185)
> at
> org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:63)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:272)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:655)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.ClassNotFoundException:
> co.ronak.nto.Job$$anon$18$$anon$21$$anon$3
> at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:348)
> at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:626)
> at
> java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1613)
> at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1518)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
> at
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
> at
> java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:501)
> at
> org.apache.flink.api.scala.typeutils.TraversableSerializer.readObject(TraversableSerializer.scala:53)
> at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
> at
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
> at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1707)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1345)
> at
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1924)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
> at
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
> at
> java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:501)
> at
> org.apache.flink.cep.NonDuplicatingTypeSerializer.readObject(NonDuplicatingTypeSerializer.java:190)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
> at
> java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2000)
> at
> java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:501)
> at org.apache.flink.cep.nfa.NFA.readObject(NFA.java:394)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
> at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1900)
> at
> java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1801)
> at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1351)
> at java.io.ObjectInputStream.readObject(ObjectInputStream.java:371)
> at org.apache.flink.cep.nfa.NFA$Serializer.deserialize(NFA.java:535)
> ... 10 more
> {code}
> The problem seems to be that {{NFA.readObject()}} internally uses a
> {{TypeSerializer}} to read some other stuff and wrapped in those
> {{TypeSerializers}} might be code that tries to resolve classes and there we
> then don't use the user-code class loader.
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