Hey, I'm trying to run a job which uses a dynamically generated class (through Byte Buddy). think of me having a complex schema as yaml text and generating a class from it. Throughout the job i am using an artificial super class (MySuperClass) of the generated class (as for example i need to specify the generic class to extend RichMapFunction).
MyRichMapFunction<Y extends MySuperClass> extends RichMapFunction<Row, Y> is introducing the dynamic class. It will take the yaml in the CTOR and: 1. open - takes the schema and converts it into a Pojo class which extends MySuperClass 2. getProducedType - does the same thing in order to correctly send the Pojo with all the right fields So basically my job is something like env.addSource([stream of pojos]) .filter(...) ... (register table, running a query which generates Rows) .map(myRichMapFunction) .returns(myRichMapFunction.getProducedType) .addSink(...) My trouble now is that, when running on a cluster the classloader fails to load my generated class. i tried to use getRuntimeContext().getUserCodeClassLoader() as the loader to use for Byte Buddy - but doesnt seem to be enough. Was reading about it here: https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/debugging_classloading.html Is there a hook maybe to get called when a job is loaded so i can load the class? Stacktrace: org.apache.flink.client.program.ProgramInvocationException: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com....model.MyGeneratedClass ClassLoader info: URL ClassLoader: file: '/var/folders/f7/c4pvjrf902b6c73_tbzkxnjw0000gn/T/blobStore-4b685b0a-b8c1-43a1-a75d-f0b9c0156f4c/job_d1187ea7e783007b92ef6c0597d72fcb/blob_p-38b9e6dce2423b0374f82842a35dcaa92e10dedd-6f1056ab61afcccb3c1fca895ccb3eb0' (valid JAR) Class not resolvable through given classloader. at org.apache.flink.client.program.rest.RestClusterClient.submitJob(RestClusterClient.java:264) at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:464) at org.apache.flink.streaming.api.environment.StreamContextEnvironment.execute(StreamContextEnvironment.java:66) at com.....MainClass.main(MainClass.java:46) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:528) at org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:420) at org.apache.flink.client.program.ClusterClient.run(ClusterClient.java:404) at org.apache.flink.client.cli.CliFrontend.executeProgram(CliFrontend.java:785) at org.apache.flink.client.cli.CliFrontend.runProgram(CliFrontend.java:279) at org.apache.flink.client.cli.CliFrontend.run(CliFrontend.java:214) at org.apache.flink.client.cli.CliFrontend.parseParameters(CliFrontend.java:1025) at org.apache.flink.client.cli.CliFrontend.lambda$main$9(CliFrontend.java:1101) at org.apache.flink.runtime.security.NoOpSecurityContext.runSecured(NoOpSecurityContext.java:30) at org.apache.flink.client.cli.CliFrontend.main(CliFrontend.java:1101) Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com.....model.DynamicSchema ClassLoader info: URL ClassLoader: file: '/var/folders/f7/c4pvjrf902b6c73_tbzkxnjw0000gn/T/blobStore-4b685b0a-b8c1-43a1-a75d-f0b9c0156f4c/job_d1187ea7e783007b92ef6c0597d72fcb/blob_p-38b9e6dce2423b0374f82842a35dcaa92e10dedd-6f1056ab61afcccb3c1fca895ccb3eb0' (valid JAR) Class not resolvable through given classloader. at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:236) at org.apache.flink.streaming.runtime.tasks.OperatorChain.<init>(OperatorChain.java:99) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:273) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:703) at java.lang.Thread.run(Thread.java:748) -- Sent from: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
