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https://issues.apache.org/jira/browse/FLINK-2543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephan Ewen resolved FLINK-2543.
---------------------------------
Resolution: Fixed
Fixed via bf8c8e54094151348caedd3120931516f76c3cf3 and
0ba53558f9b56b1e17c84ab8e4ee639ca09b9133
> State handling does not support deserializing classes through the
> UserCodeClassloader
> -------------------------------------------------------------------------------------
>
> Key: FLINK-2543
> URL: https://issues.apache.org/jira/browse/FLINK-2543
> Project: Flink
> Issue Type: Bug
> Components: Streaming
> Affects Versions: 0.9, 0.10
> Reporter: Robert Metzger
> Assignee: Robert Metzger
> Priority: Blocker
> Fix For: 0.10
>
>
> The current implementation of the state checkpointing does not support custom
> classes, because the UserCodeClassLoader is not used to deserialize the state.
> {code}
> Error: java.lang.RuntimeException: Failed to deserialize state handle and
> setup initial operator state.
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:544)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.ClassNotFoundException:
> com.ottogroup.bi.searchlab.searchsessionizer.OperatorState
> 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.readObject(ObjectInputStream.java:371)
> at
> org.apache.flink.runtime.state.ByteStreamStateHandle.getState(ByteStreamStateHandle.java:63)
> at
> org.apache.flink.runtime.state.ByteStreamStateHandle.getState(ByteStreamStateHandle.java:33)
> at
> org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.restoreInitialState(AbstractUdfStreamOperator.java:83)
> at
> org.apache.flink.streaming.runtime.tasks.StreamTask.setInitialState(StreamTask.java:276)
> at
> org.apache.flink.runtime.state.StateUtils.setOperatorState(StateUtils.java:51)
> at org.apache.flink.runtime.taskmanager.Task.run(Task.java:541)
> {code}
> The issue has been reported by a user:
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Custom-Class-for-state-checkpointing-td2415.html
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