Knowage Execution Python Function error

[ignaciolazaro]

Dear Alessandro

I have a working instance of a docker of knowage (image: knowagelabs/knowage-server-docker:develop) and when I try to execute a simple Function defined with phyton I get the following error at tomcat logs

EVERE: Servlet.service() for servlet [it.eng.spagobi.rest.application.JAXRSApplication] in context with path [/knowagedataminingengine] threw exception org.jboss.resteasy.spi.UnhandledException: java.lang.UnsatisfiedLinkError: Can't load library: /home/spagobi/PythonJpy/jpy/build/lib.linux-x86_64-3.4/jpy.cpython-34m.so****

In folder /home does not exist the _spagobi_ folder, in folder home exists the folder knowage how to configure python properly?

If I execute a function defined in R I get the following error at internet browser

java.lang.NullPointerException org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:314) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) java.lang.Thread.run(Thread.java:745)

Maybe I need download another different docker image

Many thanks in advance for your support

BR Nacho

[aportosa]

I guess this is an issue of the docker image. When created, Python and R environments have not been configured properly. We will fix this in the next release.

[ignaciolazaro]

Thank you for your reply. When is planned next release? BR

[aportosa]

I do not have a release date by now. But hopefully will will provide a minor release on March.

[ignaciolazaro]

Dear Alessandro

Do you have any news from the new release with the issue solved?

BR

[ignaciolazaro]

Dear Alessandro

Again the same question, do you have any news from the new release with the issue solved? Or maybe I must consider to evaluate other options....

BR

[aportosa]

Dear @ignaciolazaro, I'm sorry but I do not have a release date at this very moment... I can only suggest to use Knowage through standard packages installation

[aportosa]

Dear @ignaciolazaro , Knowage 6.2.0 RC has just been released. We will update the docker image shortly.

[ignaciolazaro]

Thank you for the new release!!

The tests done are the following

1- I have downloaded new docker 2- I have defined a simple dataset with a CSV file (not sure if it is ok, due no information found at https://download.forge.ow2.org/knowage/Knowage_6.x_CE_Manual.pdf )

3- I have defined a simple R file

myPredictionFunction (temperature, humidity) { value= 0 if(temperature>myThresholdTemperature){ value=1 }else{ value=2 }
} 4- And in the knowageDataMiningEngine.log file at knowage docker appears these lines of log

Caused by: it.eng.spagobi.utilities.exceptions.SpagoBIRuntimeException: Error starting the Data Mining engine or getting datamining engine execution results! at it.eng.spagobi.engines.datamining.common.FunctionExecutor.execute(FunctionExecutor.java:150) at it.eng.spagobi.engines.datamining.api.FunctionExecutionResource.executeSampleCatalogFunctionById(FunctionExecutionResource.java:48) ... 34 more Caused by: it.eng.spagobi.utilities.exceptions.SpagoBIRuntimeException: DataMining execution error:No R instance found at it.eng.spagobi.engines.datamining.common.FunctionExecutionUtils.buildDataminingResponse(FunctionExecutionUtils.java:298) at it.eng.spagobi.engines.datamining.common.FunctionExecutor.execute(FunctionExecutor.java:147)

Well, now what can I do?

R is right installed in docker?

If it is right installed, how to test?

Would you mind to provide a simple R file that can works on this docke version, I suppose you have done some test before release

Many thanks for your support

Best Regards

[aportosa]

The Docker develop tag has been updated with the last Knowage version, but we haven't setup the R/Python environment yet.

[ignaciolazaro]

Thanks for the information Then I will wait before to more tests with Knowage

BR

[kunthar]

@ignaciolazaro still waiting? @aportosa any progress?

[ignaciolazaro]

Yes, yet waiting, 8 months to solve a configuration issue...