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https://issues.apache.org/jira/browse/FLINK-3338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15132957#comment-15132957
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ASF GitHub Bot commented on FLINK-3338:
---------------------------------------
GitHub user StephanEwen opened a pull request:
https://github.com/apache/flink/pull/1590
[FLINK-3338] [kafka] Use proper classloader when cloning the
deserialization schema
Fixes a class not found exception reported by a user.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/StephanEwen/incubator-flink deser_cl_fix
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1590.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1590
----
commit b0744b4a576bf886ffdfc585c69310ff7868d70e
Author: Stephan Ewen <se...@apache.org>
Date: 2016-02-04T20:14:39Z
[FLINK-3338] [kafka] Use proper classloader when cloning the
deserialization schema.
----
> Kafka deserialization issue - ClassNotFoundException
> ----------------------------------------------------
>
> Key: FLINK-3338
> URL: https://issues.apache.org/jira/browse/FLINK-3338
> Project: Flink
> Issue Type: Bug
> Reporter: Shikhar Bhushan
> Assignee: Stephan Ewen
>
> 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 via FLINK-3313? I
> don't understand why it would happen though.
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