Shikhar Bhushan created FLINK-3338:
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Summary: Kafka deserialization issue - ClassNotFoundException
Key: FLINK-3338
URL: https://issues.apache.org/jira/browse/FLINK-3338
Project: Flink
Issue Type: Bug
Reporter: Shikhar Bhushan
I get this error when running a JAR submitted using the web UI on a production
standalone cluster (single node, 1 TM & 1 JM), but not on a standalone cluster
(1 TM & 1 JM) running on my laptop. JDK8 on both.
{noformat}
java.lang.ClassNotFoundException: omitted$KafkaDeserializationSchema$
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at
org.apache.flink.util.InstantiationUtil$ClassLoaderObjectInputStream.resolveClass(InstantiationUtil.java:62)
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.readSerialData(ObjectInputStream.java:1924)
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.util.InstantiationUtil.deserializeObject(InstantiationUtil.java:288)
at
org.apache.flink.util.InstantiationUtil.clone(InstantiationUtil.java:314)
at
org.apache.flink.streaming.connectors.kafka.internals.LegacyFetcher.run(LegacyFetcher.java:203)
at
org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer08.run(FlinkKafkaConsumer08.java:307)
at
org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:58)
at
org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:55)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:218)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:562)
at java.lang.Thread.run(Thread.java:745)
{noformat}
[~till.rohrmann] this seems related to your recent change? I don't understand
why it would happen though.
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