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From Robert Metzger <rmetz...@apache.org>
Subject Re: The main method caused an error. HDFS flink
Date Tue, 08 Sep 2015 11:11:28 GMT
There is a bug in the web client which sets the wrong class loader when
running the user code.

On Tue, Sep 8, 2015 at 12:05 PM, Florian Heyl <f.heyl@gmx.de> wrote:

> Locally we are using the 0.9-SNAPSHOT but the cluster should work with the
> 0.10-SNAPSHOT. I have no direct control of the cluster because our prof is
> responsible for that.
> The students are using the flink web submission client to upload their jar
> and run it on the cluster.
>
>
> Am 08.09.2015 um 12:48 schrieb Robert Metzger <rmetzger@apache.org>:
>
> Which version of Flink are you using?
>
> Have you tried submitting the job using the "./bin/flink run" tool?
>
> On Tue, Sep 8, 2015 at 11:44 AM, Florian Heyl <f.heyl@gmx.de> wrote:
>
>> Dear Sir or Madam,
>> Me and my colleague are developing a pipeline based on scala and java to
>> classify cancer stages. This pipeline should be uploaded on the hdfs
>> (apache flink).
>> The pipeline locally works fine but on the hdfs it crashes with the
>> following error (see below). The main method is simply structured we are
>> only passing one argument to set the working directory and then other
>> methods from different scala and java files are called. Sorry if I can not
>> give you more details because I can not figure out what the exact problem
>> is. I hope you can help me.
>>
>> Best wishes,
>>
>> Flo
>>
>>
>>  An error occurred while invoking the program:
>>
>> The main method caused an error.
>>
>>
>> java.io.IOException: Class not found
>> 	at com.esotericsoftware.reflectasm.shaded.org.objectweb.asm.ClassReader.a(Unknown
Source)
>> 	at com.esotericsoftware.reflectasm.shaded.org.objectweb.asm.ClassReader.<init>(Unknown
Source)
>> 	at org.apache.flink.api.scala.ClosureCleaner$.org$apache$flink$api$scala$ClosureCleaner$$getClassReader(ClosureCleaner.scala:42)
>> 	at org.apache.flink.api.scala.ClosureCleaner$.getInnerClasses(ClosureCleaner.scala:90)
>> pache.flink.api.scala.DataSet.clean(DataSet.scala:120)
>> 	at org.apache.flink.ap
>> 	at org.apache.flink.api.scala.ClosureCleaner$.clean(ClosureCleaner.scala:113)
>> 	at org.
>> ai.scala.DataSet$$anon$6.<init>(DataSet.scala:437)
>> 	at org.apache.flink.api.scala.DataSet.filter(DataSet.scala:436)
>> VI$sp(Regression2.scala:98)
>> 	at scala.collection.immutable.Range.
>> 	at AddFunctions$.splitIntoTrainingAndTest(AddFunctions.scala:42)
>> 	at Regression2$$anonfun$mainRegression$1.apply$m
>> cforeach$mVc$sp(Range.scala:141)
>> 	at Regression2$.mainRegression(Regression2.scala:91)
>> 	at MainClass$.main(MainClass.scala:41)
>> 	at MainClass.main(MainClass.scala)
>> elegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
>> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>> 	at sun.reflect.
>> D.java:43)
>> 	at java.lang.reflect.Method.invoke(Method.java:483)
>> 	at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:437)
>> tOptimizedPlan(Client.java:229)
>> 	at org.apache.flink.client.web.JobSubmissionServlet.doGet(JobSubmissionServlet
>> 	at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:353)
>> 	at org.apache.flink.client.program.Client.g
>> e.java:186)
>> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
>> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
>> 	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:532)
>> doHandle(ContextHandler.java:965)
>> 	at org.eclipse.jetty.servlet.ServletHandler
>> 	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:453)
>> 	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:227)
>> 	at org.eclipse.jetty.server.handler.ContextHandler
>> ..doScope(ServletHandler.java:388)
>> 	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:187)
>> 	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:901)
>> 	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
>> ection.java:596)
>> 	at org.eclipse.jetty.server.HttpConnection$RequestHandler.
>> 	at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:47)
>> 	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)
>> 	at org.eclipse.jetty.server.Server.handle(Server.java:352)
>> 	at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpCon
>> nheaderComplete(HttpConnection.java:1048)
>> 	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:549)
>> 	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:211)
>> 	at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:425)
>> 	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:489)
>> 	at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
>> 	at java.lang.Thread.run(Thread.java:745)
>>
>>
>>
>>
>
>

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