Nico Kruber created FLINK-10419:
-----------------------------------
Summary: ClassNotFoundException while deserializing user
exceptions from checkpointing
Key: FLINK-10419
URL: https://issues.apache.org/jira/browse/FLINK-10419
Project: Flink
Issue Type: Bug
Components: Distributed Coordination, State Backends, Checkpointing
Affects Versions: 1.5.4, 1.6.1, 1.6.0, 1.5.3, 1.5.2, 1.5.1, 1.5.0, 1.7.0
Reporter: Nico Kruber
Assignee: Nico Kruber
If, during asynchronous checkpointing, a user-code exception is thrown, for
example like this: {{TwoPhaseCommitSinkFunction#snapshotState}} ->
{{FlinkKafkaProducer011#preCommit}}
-> {{FlinkKafka011Exception}}, it will be sent back to the checkpoint
coordinator via Java serialization but will then fail during the
de-serialization because the class is not available. This will result in the
following error shadowing the real one:
{code}
java.lang.ClassNotFoundException:
org.apache.flink.streaming.connectors.kafka.FlinkKafka011Exception
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher.loadClass(Launcher.java:338)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at
org.apache.flink.util.InstantiationUtil.resolveClass(InstantiationUtil.java:76)
at
java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1859)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1745)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2033)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1567)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2278)
at
java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:557)
at java.lang.Throwable.readObject(Throwable.java:914)
at sun.reflect.GeneratedMethodAccessor158.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1158)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2169)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2060)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1567)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:427)
at
org.apache.flink.runtime.rpc.messages.RemoteRpcInvocation.readObject(RemoteRpcInvocation.java:222)
at sun.reflect.GeneratedMethodAccessor7.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1158)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:2169)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2060)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1567)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:427)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:502)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:489)
at
org.apache.flink.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:477)
at
org.apache.flink.util.SerializedValue.deserializeValue(SerializedValue.java:58)
at
org.apache.flink.runtime.rpc.messages.RemoteRpcInvocation.deserializeMethodInvocation(RemoteRpcInvocation.java:118)
at
org.apache.flink.runtime.rpc.messages.RemoteRpcInvocation.getMethodName(RemoteRpcInvocation.java:59)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcInvocation(AkkaRpcActor.java:214)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.handleRpcMessage(AkkaRpcActor.java:162)
at
org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.handleRpcMessage(FencedAkkaRpcActor.java:70)
at
org.apache.flink.runtime.rpc.akka.AkkaRpcActor.onReceive(AkkaRpcActor.java:142)
at
org.apache.flink.runtime.rpc.akka.FencedAkkaRpcActor.onReceive(FencedAkkaRpcActor.java:40)
at
akka.actor.UntypedActor3728anonfun.applyOrElse(UntypedActor.scala:165)
at akka.actor.Actor.aroundReceive(Actor.scala:502)
at akka.actor.UntypedActor.aroundReceive(UntypedActor.scala:95)
at akka.actor.ActorCell.receiveMessage(ActorCell.scala:526)
at akka.actor.ActorCell.invoke(ActorCell.scala:495)
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:257)
at akka.dispatch.Mailbox.run(Mailbox.scala:224)
at akka.dispatch.Mailbox.exec(Mailbox.scala:234)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at
scala.concurrent.forkjoin.ForkJoinPool.runTask(ForkJoinPool.java:1339)
at
scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at
scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
{code}
To fix this, {{AkkaRpcActor#handleCallAsync}}, {{AkkaRpcActor#handleRunAsync}}
and {{AkkaRpcActor#handleRpcInvocation}} should wrap user exceptions in a
{{SerializedThrowable}} and only then send it back.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
