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ASF GitHub Bot commented on FLINK-3633: --------------------------------------- Github user uce commented on the pull request: https://github.com/apache/flink/pull/1818#issuecomment-200830880 The other programs that are executed in `ClassLoaderITCase` are contained in the `org.apache.flink.test.classloading.jar` package (search for `KMeansForTest` for example). They are then packaged by the assembly plugin (see `pom.xml` of `flink-tests`). The `ClassLoaderITCase` sets up a cluster and submits the assembled JARs. Can we just follow this setup? > Job submission silently fails when using user code types > -------------------------------------------------------- > > Key: FLINK-3633 > URL: https://issues.apache.org/jira/browse/FLINK-3633 > Project: Flink > Issue Type: Bug > Affects Versions: 1.1.0 > Reporter: Till Rohrmann > Assignee: Till Rohrmann > Priority: Blocker > Fix For: 1.1.0 > > > With the changes introduced by FLINK-3327, it is no longer possible to run > remote Flink jobs which work on user code types. The reason is that now the > {{ExecutionConfig}} is directly stored in the {{JobGraph}} which is sent as > an Akka message to the {{JobManager}}. Per default, user code types are > automatically detected and registered in the {{ExecutionConfig}}. When > deserializing a {{JobGraph}} whose {{ExecutionConfig}} contains user code > classes the user code class loader is consequently required. However, Akka > does not have access to it and uses the system class loader. This causes that > Akka silently discards the {{SubmitJob}} message which cannot be deserialized > because of a {{ClassNotFoundException}}. > I propose to not sent the {{ExecutionConfig}} explicitly with the > {{JobGraph}} and, thus, to partially revert the changes to before FLINK-3327. > Before, the {{ExectuionConfig}} was serialized into the job configuration and > deserialized on the {{TaskManager}} using the proper user code class loader. > In order to reproduce the problem you can submit the following job to a > remote cluster. > {code} > public class Job { > public static class CustomType { > private final int value; > public CustomType(int value) { > this.value = value; > } > @Override > public String toString() { > return "CustomType(" + value + ")"; > } > } > public static void main(String[] args) throws Exception { > ExecutionEnvironment env = > ExecutionEnvironment.createRemoteEnvironment(Address, Port, PathToJar); > env.getConfig().disableAutoTypeRegistration(); > DataSet<Integer> input = env.fromElements(1,2,3,4,5); > DataSet<CustomType> customTypes = input.map(new > MapFunction<Integer, CustomType>() { > @Override > public CustomType map(Integer integer) throws Exception > { > return new CustomType(integer); > } > }); > customTypes.print(); > } > } > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)