It is most likely an issue with the Maven configuration in one of your modules.
Can you share your project, or the pom files for the processors, NAR, and bundle? Thanks, Bryan On Mon, Nov 6, 2017 at 12:20 PM, Phil H <[email protected]> wrote: > Nifi version is 1.3.0, running on Java 1.8.0_131, running on a out-of-the-box > CentOS (if that’s relevant) > >> On 7 Nov 2017, at 4:17 am, Phil H <[email protected]> wrote: >> >> I added the StandardValidators reference back in and the original error >> reoccurs. The offending code (which compiles fine using the same JDK) is >> totally standard stuff: >> >> public static final PropertyDescriptor ID_PATH = new PropertyDescriptor >> .Builder().name("ID_PATH") >> .displayName("JSON ID Path") >> .description("The path to the JSON attribute that represents the >> unique ID for the object") >> .addValidator(StandardValidators.NON_BLANK_VALIDATOR) >> .required(true) >> .build(); >> >> >> 2017-11-07 04:13:46,855 ERROR [main] org.apache.nifi.NiFi Failure to launch >> NiFi due to java.util.ServiceConfigurationError: >> org.apache.nifi.processor.Processor: Provider >> com.jidmu.processors.JSONCondenser.JSONCondenser could not be instantiated >> java.util.ServiceConfigurationError: org.apache.nifi.processor.Processor: >> Provider com.jidmu.processors.JSONCondenser.JSONCondenser could not be >> instantiated >> at java.util.ServiceLoader.fail(ServiceLoader.java:232) >> at java.util.ServiceLoader.access$100(ServiceLoader.java:185) >> at >> java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384) >> at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404) >> at java.util.ServiceLoader$1.next(ServiceLoader.java:480) >> at >> org.apache.nifi.nar.ExtensionManager.loadExtensions(ExtensionManager.java:138) >> at >> org.apache.nifi.nar.ExtensionManager.discoverExtensions(ExtensionManager.java:104) >> at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:699) >> at org.apache.nifi.NiFi.<init>(NiFi.java:160) >> at org.apache.nifi.NiFi.main(NiFi.java:267) >> Caused by: java.lang.NoClassDefFoundError: >> org/apache/nifi/processor/util/StandardValidators >> at >> com.jidmu.processors.JSONCondenser.JSONCondenser.<clinit>(JSONCondenser.java:58) >> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native >> Method) >> at >> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) >> at >> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) >> at java.lang.reflect.Constructor.newInstance(Constructor.java:423) >> at java.lang.Class.newInstance(Class.java:442) >> at >> java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380) >> ... 7 common frames omitted >> Caused by: java.lang.ClassNotFoundException: >> org.apache.nifi.processor.util.StandardValidators >> at java.net.URLClassLoader.findClass(URLClassLoader.java:381) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:424) >> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) >> at java.lang.ClassLoader.loadClass(ClassLoader.java:357) >> ... 14 common frames omitted >> >> >>> On 7 Nov 2017, at 4:02 am, Joe Witt <[email protected]> wrote: >>> >>> Can you share the code by chance for a review? Otherwise, you'll want >>> to add a debugger at runtime and examine the context classloader as it >>> goes through to see where it goes wonky. >>> >>> What version are you on? >>> >>> Thanks >>> >>> On Mon, Nov 6, 2017 at 11:58 AM, Phil H <[email protected]> wrote: >>>> Hi guys, >>>> >>>> I have just (today) started having issues with a new processor I've >>>> written where a seemingly random class (e.g.: StandardValidators) fails to >>>> load when NiFi is initializing. I've created this processor like all my >>>> others (using the maven archetype) and the VM I'm running it on has not >>>> changed versions of any software. >>>> >>>> I removed any reference to StandardValidators, and the NAR then loaded >>>> successfully. As I added some more functionality, I then had the same >>>> ClassNotFoundException occur with a different random class. >>>> >>>> Because I have used the maven archetype, all my other processors obviously >>>> use StandardValidators, so it's not like the class itself is somehow >>>> corrupted. This feels like either a NiFi or maybe even JVM bug (or other >>>> issue that is surfacing as this ClassNotFoundException). >>>> >>>> Pulling my hair out here - would love some help! >>>> >>>> Cheers, >>>> Phil >> >
