ClassNotFoundException: org.apache.kafka.common.metrics.stats.Rate$1

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ClassNotFoundException: org.apache.kafka.common.metrics.stats.Rate$1

Avi Levi
looking at the log file of the taskexecutor I see this exception
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.ClassNotFoundException: org.apache.kafka.common.metrics.stats.Rate$1
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$ChildFirstClassLoader.loadClass(FlinkUserCodeClassLoaders.java:129)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 22 more
anyone know what should I do to avoid it ?
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Re: ClassNotFoundException: org.apache.kafka.common.metrics.stats.Rate$1

Stefan Richter
Hi,

It should be as easy as making sure that there is a jar with the missing class in the class path of your user-code class loader.

Best,
Stefan

On 20. Nov 2018, at 14:32, Avi Levi <[hidden email]> wrote:

looking at the log file of the taskexecutor I see this exception
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: java.lang.ClassNotFoundException: org.apache.kafka.common.metrics.stats.Rate$1
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at org.apache.flink.runtime.execution.librarycache.FlinkUserCodeClassLoaders$ChildFirstClassLoader.loadClass(FlinkUserCodeClassLoaders.java:129)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

... 22 more
anyone know what should I do to avoid it ?