I’m attempting to build a new application leveraging a custom Malhar library. I’ve compiled the updated Malhar library, confirmed that the classes I’ve added are present, and added this specific library as a system dependency in my pom of the newly created application:
<dependency> <groupId>org.apache.apex</groupId> <artifactId>malhar-library</artifactId> <version>3.5.0-SNAPSHOT</version> <scope>system</scope> <systemPath>code/apex-malhar/library/target/malhar-library-3.5.0-SNAPSHOT.jar</systemPath> </dependency> However, when I then build this new application and upload the generated APA to the cluster and attempt to run it with the DataTorrent UI, I get a NoClassDefFoundError. I would appreciate some help understanding what I’m doing incorrectly – I believe the dependency on the newly added class should be provided since the APA is an UberJar. Am I missing something obvious here? An error occurred trying to launch the application. Server message: java.lang.NoClassDefFoundError: com/datatorrent/lib/stream/MultipleStreamMerger at com.example.merger.Application.populateDAG(Application.java:41) at com.datatorrent.stram.plan.logical.LogicalPlanConfiguration.prepareDAG(LogicalPlanConfiguration.java:1171) at com.datatorrent.stram.client.StramAppLauncher$1.createApp(StramAppLauncher.java:404) at com.datatorrent.stram.client.StramAppLauncher.launchApp(StramAppLauncher.java:479) at com.datatorrent.stram.cli.DTCli$LaunchCommand.execute(DTCli.java:2048) at com.datatorrent.stram.cli.DTCli.launchAppPackage(DTCli.java:3452) at com.datatorrent.stram.cli.DTCli.access$7000(DTCli.java:104) at com.datatorrent.stram.cli.DTCli$LaunchCommand.execute(DTCli.java:1893) at com.datatorrent.stram.cli.DTCli$3.run(DTCli.java:1447) Caused by: java.lang.ClassNotFoundException: com.datatorrent.lib.stream.MultipleStreamMerger at java.net.URLClassLoader$1.run(URLClassLoader.java:366) at java.net.URLClassLoader$1.run(URLClassLoader.java:355) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:354) at java.lang.ClassLoader.loadClass(ClassLoader.java:425) at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789) at java.lang.ClassLoader.loadClass(ClassLoader.java:358) ... 9 more Fatal error encountered ________________________________________________________ The information contained in this e-mail is confidential and/or proprietary to Capital One and/or its affiliates and may only be used solely in performance of work or services for Capital One. The information transmitted herewith is intended only for use by the individual or entity to which it is addressed. If the reader of this message is not the intended recipient, you are hereby notified that any review, retransmission, dissemination, distribution, copying or other use of, or taking of any action in reliance upon this information is strictly prohibited. If you have received this communication in error, please contact the sender and delete the material from your computer.
