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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 18:33:51 GMT
As I said, the workaround is using the "bin/flink" tool from the command
line.
I think it should be possible to add a "student" account on the cluster to
access the Flink installation?

On Tue, Sep 8, 2015 at 12:36 PM, Florian Heyl <f.heyl@gmx.de> wrote:

> Ok I see, thank you. Do not have experience with that but does there
> exists a possible work around?
>
>
> Am 08.09.2015 um 13:13 schrieb Robert Metzger <rmetzger@apache.org>:
>
> That's the bug: https://issues.apache.org/jira/browse/FLINK-2632
>
> On Tue, Sep 8, 2015 at 1:11 PM, Robert Metzger <rmetzger@apache.org>
> wrote:
>
>> 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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