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From Maximilian Michels <...@apache.org>
Subject Re: First Program with WordCount - Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/flink/api/common/functions/FlatMapFunction
Date Wed, 19 Oct 2016 13:07:18 GMT
This usually happens when you enable the 'build-jar' profile from
within IntelliJ. This profile assumes you have a Flink installation in
the class path which is only true if you submit the job to an existing
Flink cluster.

-Max


On Mon, Oct 17, 2016 at 10:50 AM, Stefan Richter
<s.richter@data-artisans.com> wrote:
> Hi,
>
> looks like there is no Flink jar in the classpath with which you run your
> program. You need to make sure that they relevant jars are there or else
> your program cannot find Flinkā€™s classes, leading to a
> ClassNotFoundException.
>
> Best,
> Stefan
>
> Am 16.10.2016 um 19:26 schrieb Kaepke, Marc <marc.kaepke@haw-hamburg.de>:
>
> Hi guys,
>
> I followed this guide
> (https://ci.apache.org/projects/flink/flink-docs-release-1.2/quickstart/java_api_quickstart.html),
> but I get an Exception if I run WordCount
>
> /usr/lib/jvm/java-8-oracle/bin/java -Didea.launcher.port=7536
> -Didea.launcher.bin.path=/home/marc/Programs/idea-IC-162.2032.8/bin
> -Dfile.encoding=UTF-8 -classpath
> "/usr/lib/jvm/java-8-oracle/jre/lib/charsets.jar:/usr/lib/jvm/java-8-oracle/jre/lib/deploy.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/cldrdata.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/dnsns.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/jaccess.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/jfxrt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/localedata.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/nashorn.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/sunec.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/sunjce_provider.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/sunpkcs11.jar:/usr/lib/jvm/java-8-oracle/jre/lib/ext/zipfs.jar:/usr/lib/jvm/java-8-oracle/jre/lib/javaws.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jce.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jfr.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jfxswt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jsse.jar:/usr/lib/jvm/java-8-oracle/jre/lib/management-agent.jar:/usr/lib/jvm/java-8-oracle/jre/lib/plugin.jar:/usr/lib/jvm/java-8-oracle/jre/lib/resources.jar:/usr/lib/jvm/java-8-oracle/jre/lib/rt.jar:/home/marc/apache
> flink/flink.gelly/target/classes:/home/marc/Programs/idea-IC-162.2032.8/lib/idea_rt.jar"
> com.intellij.rt.execution.application.AppMain
> haw.bachelor.flink.gelly.WordCount
> Exception in thread "main" java.lang.NoClassDefFoundError:
> org/apache/flink/api/common/functions/FlatMapFunction
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:264)
> at com.intellij.rt.execution.application.AppMain.main(AppMain.java:123)
> Caused by: java.lang.ClassNotFoundException:
> org.apache.flink.api.common.functions.FlatMapFunction
> 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)
> ... 3 more
>
>
> my environment:
>
> Ubuntu 14.04 LTS
> Oracle Java 8
> Maven 3.0.5
> intellij communityedition
>
>
>
> thanks for help
> Marc
>
>

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