Class not found (IWorkspaceRunnable) when deploying jodd to a servlet via gradle - jetty

I'm trying to use Jetty to deploy a Jodd servlet. My build tool is Gradle. When I call gradle jettyRun, I get a ClassNotFound exception. I've tried adding various jars to the runtime, but I can't seem to find one that fixes this exception.
Here's my build.gradle:
apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'war'
apply plugin: 'jetty'
repositories {
mavenCentral()
}
dependencies {
compile 'org.slf4j:slf4j-log4j12:1.7.5'
compile 'org.jodd:jodd-madvoc:3.4.4'
compile 'org.eclipse.jetty.orbit:javax.servlet:3.0.0.v201112011016'
testCompile 'junit:junit:4.11'
testCompile 'org.hamcrest:hamcrest-all:1.3'
}
and I get the following stack trace:
2013-07-03 00:51:00 INFO Madvoc:180 - Madvoc starting...
2013-07-03 00:51:00 INFO Madvoc:185 - Madvoc web application: com.ziroby.meeting.madvoc.MyWebApplication
2013-07-03 00:51:00 INFO Madvoc:268 - Loading Madvoc parameters from: /madvoc.props
2013-07-03 00:51:00 INFO Madvoc:288 - Configuring Madvoc using default automagic configurator
failed org.gradle.api.plugins.jetty.internal.JettyPluginWebAppContext#6ad4f3ec{/server,/windows/Users/ziroby/git/rc-meeting/server/src/main/webapp}: java.lang.NoClassDefFoundError: org/eclipse/core/resources/IWorkspaceRunnable
failed ContextHandlerCollection#728e5d0d: java.lang.NoClassDefFoundError: org/eclipse/core/resources/IWorkspaceRunnable
failed HandlerCollection#607f3b3c: java.lang.NoClassDefFoundError: org/eclipse/core/resources/IWorkspaceRunnable
Error starting handlers
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IWorkspaceRunnable
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:787)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:447)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
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:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.getDeclaringClass(Native Method)
at java.lang.Class.getEnclosingClass(Class.java:1107)
at java.lang.Class.getSimpleBinaryName(Class.java:1242)
at java.lang.Class.getSimpleName(Class.java:1134)
at java.lang.Class.isAnonymousClass(Class.java:1210)
at jodd.madvoc.config.AutomagicMadvocConfigurator.checkClass(AutomagicMadvocConfigurator.java:118)
at jodd.madvoc.config.AutomagicMadvocConfigurator.onActionClass(AutomagicMadvocConfigurator.java:138)
at jodd.madvoc.config.AutomagicMadvocConfigurator.onEntry(AutomagicMadvocConfigurator.java:97)
at jodd.io.findfile.ClassFinder.scanEntry(ClassFinder.java:375)
at jodd.io.findfile.ClassFinder.scanJarFile(ClassFinder.java:268)
at jodd.io.findfile.ClassFinder.scanPath(ClassFinder.java:237)
at jodd.io.findfile.ClassFinder.scanPaths(ClassFinder.java:178)
at jodd.madvoc.config.AutomagicMadvocConfigurator.configure(AutomagicMadvocConfigurator.java:80)
at jodd.madvoc.config.AutomagicMadvocConfigurator.configure(AutomagicMadvocConfigurator.java:64)
at jodd.madvoc.WebApplication.configure(WebApplication.java:245)
at jodd.madvoc.Madvoc.start(Madvoc.java:218)
at jodd.madvoc.Madvoc.startNewWebApplication(Madvoc.java:153)
at jodd.madvoc.MadvocContextListener.contextInitialized(MadvocContextListener.java:26)
at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1272)
at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:489)
at org.gradle.api.plugins.jetty.internal.JettyPluginWebAppContext.doStart(JettyPluginWebAppContext.java:112)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at org.mortbay.jetty.handler.ContextHandlerCollection.doStart(ContextHandlerCollection.java:156)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerCollection.doStart(HandlerCollection.java:152)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
at org.mortbay.jetty.Server.doStart(Server.java:224)
at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
at org.gradle.api.plugins.jetty.internal.Jetty6PluginServer.start(Jetty6PluginServer.java:111)
at org.gradle.api.plugins.jetty.AbstractJettyRunTask.startJettyInternal(AbstractJettyRunTask.java:247)
at org.gradle.api.plugins.jetty.AbstractJettyRunTask.startJetty(AbstractJettyRunTask.java:198)
at org.gradle.api.plugins.jetty.AbstractJettyRunTask.start(AbstractJettyRunTask.java:169)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:233)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1047)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:877)
at org.gradle.api.internal.BeanDynamicObject$MetaClassAdapter.invokeMethod(BeanDynamicObject.java:216)
at org.gradle.api.internal.BeanDynamicObject.invokeMethod(BeanDynamicObject.java:122)
at org.gradle.api.internal.CompositeDynamicObject.invokeMethod(CompositeDynamicObject.java:147)
at org.gradle.api.plugins.jetty.JettyRun_Decorated.invokeMethod(Unknown Source)
at groovy.lang.GroovyObject$invokeMethod.call(Unknown Source)
at org.gradle.util.ReflectionUtil.invoke(ReflectionUtil.groovy:23)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.doExecute(AnnotationProcessingTaskFactory.java:217)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:210)
at org.gradle.api.internal.project.taskfactory.AnnotationProcessingTaskFactory$StandardTaskAction.execute(AnnotationProcessingTaskFactory.java:199)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:526)
at org.gradle.api.internal.AbstractTask$TaskActionWrapper.execute(AbstractTask.java:509)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeAction(ExecuteActionsTaskExecuter.java:80)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:61)
at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:46)
at org.gradle.api.internal.tasks.execution.PostExecutionAnalysisTaskExecuter.execute(PostExecutionAnalysisTaskExecuter.java:35)
at org.gradle.api.internal.changedetection.state.CacheLockReleasingTaskExecuter$1.run(CacheLockReleasingTaskExecuter.java:35)
at org.gradle.internal.Factories$1.create(Factories.java:22)
at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:179)
at org.gradle.cache.internal.DefaultCacheAccess.longRunningOperation(DefaultCacheAccess.java:232)
at org.gradle.cache.internal.DefaultPersistentDirectoryStore.longRunningOperation(DefaultPersistentDirectoryStore.java:142)
at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.longRunningOperation(DefaultTaskArtifactStateCacheAccess.java:83)
at org.gradle.api.internal.changedetection.state.CacheLockReleasingTaskExecuter.execute(CacheLockReleasingTaskExecuter.java:33)
at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:58)
at org.gradle.api.internal.tasks.execution.ContextualisingTaskExecuter.execute(ContextualisingTaskExecuter.java:34)
at org.gradle.api.internal.changedetection.state.CacheLockAcquiringTaskExecuter$1.run(CacheLockAcquiringTaskExecuter.java:39)
at org.gradle.internal.Factories$1.create(Factories.java:22)
at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:124)
at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:112)
at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:134)
at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:79)
at org.gradle.api.internal.changedetection.state.CacheLockAcquiringTaskExecuter.execute(CacheLockAcquiringTaskExecuter.java:37)
at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:57)
at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:41)
at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:51)
at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:52)
at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:42)
at org.gradle.api.internal.AbstractTask.executeWithoutThrowingTaskFailure(AbstractTask.java:282)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.executeTask(DefaultTaskPlanExecutor.java:48)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.processTask(DefaultTaskPlanExecutor.java:34)
at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor.process(DefaultTaskPlanExecutor.java:27)
at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter.execute(DefaultTaskGraphExecuter.java:89)
at org.gradle.execution.SelectedTaskExecutionAction.execute(SelectedTaskExecutionAction.java:29)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)
at org.gradle.api.internal.changedetection.state.TaskCacheLockHandlingBuildExecuter$1.run(TaskCacheLockHandlingBuildExecuter.java:31)
at org.gradle.internal.Factories$1.create(Factories.java:22)
at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:124)
at org.gradle.cache.internal.DefaultCacheAccess.useCache(DefaultCacheAccess.java:112)
at org.gradle.cache.internal.DefaultPersistentDirectoryStore.useCache(DefaultPersistentDirectoryStore.java:134)
at org.gradle.api.internal.changedetection.state.DefaultTaskArtifactStateCacheAccess.useCache(DefaultTaskArtifactStateCacheAccess.java:79)
at org.gradle.api.internal.changedetection.state.TaskCacheLockHandlingBuildExecuter.execute(TaskCacheLockHandlingBuildExecuter.java:29)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.access$200(DefaultBuildExecuter.java:23)
at org.gradle.execution.DefaultBuildExecuter$2.proceed(DefaultBuildExecuter.java:67)
at org.gradle.execution.DryRunBuildExecutionAction.execute(DryRunBuildExecutionAction.java:32)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:61)
at org.gradle.execution.DefaultBuildExecuter.execute(DefaultBuildExecuter.java:54)
at org.gradle.initialization.DefaultGradleLauncher.doBuildStages(DefaultGradleLauncher.java:166)
at org.gradle.initialization.DefaultGradleLauncher.doBuild(DefaultGradleLauncher.java:113)
at org.gradle.initialization.DefaultGradleLauncher.run(DefaultGradleLauncher.java:81)
at org.gradle.launcher.exec.InProcessBuildActionExecuter$DefaultBuildController.run(InProcessBuildActionExecuter.java:64)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:33)
at org.gradle.launcher.cli.ExecuteBuildAction.run(ExecuteBuildAction.java:24)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:35)
at org.gradle.launcher.exec.InProcessBuildActionExecuter.execute(InProcessBuildActionExecuter.java:26)
at org.gradle.launcher.cli.RunBuildAction.run(RunBuildAction.java:50)
at org.gradle.api.internal.Actions$RunnableActionAdapter.execute(Actions.java:171)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:201)
at org.gradle.launcher.cli.CommandLineActionFactory$ParseAndBuildAction.execute(CommandLineActionFactory.java:174)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:170)
at org.gradle.launcher.cli.CommandLineActionFactory$WithLogging.execute(CommandLineActionFactory.java:139)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:33)
at org.gradle.launcher.cli.ExceptionReportingAction.execute(ExceptionReportingAction.java:22)
at org.gradle.launcher.Main.doAction(Main.java:48)
at org.gradle.launcher.bootstrap.EntryPoint.run(EntryPoint.java:45)
at org.gradle.launcher.Main.main(Main.java:39)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.gradle.launcher.bootstrap.ProcessBootstrap.runNoExit(ProcessBootstrap.java:50)
at org.gradle.launcher.bootstrap.ProcessBootstrap.run(ProcessBootstrap.java:32)
at org.gradle.launcher.GradleMain.main(GradleMain.java:26)
Caused by: java.lang.ClassNotFoundException: org.eclipse.core.resources.IWorkspaceRunnable
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:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 140 more

There was a problem how Madvoc was scanning the classpath in v3.4.4 :) As you can see from the classpath, error comes from AutomagicMadvocConfigurator - class that scans all jars for Madvoc actions. In short, scanning process was going 'too deep'. There are two ways how to solve this:
Limit the Madvoc scanning path, to skip the eclipse jars (not recommended).
Simply use latest 3.4.5 beta snapshot (soon to be released as final). We have fixed this issue there; you can check this without our example quickstart template. As you can see in README, you can run the Madvoc example with gradlew jettyRun and it should work.
I hope this works for you! If not, please let us know, and we will make it work for you.

Related

Failed to register classes with Kryo

I am creating a spark context by using-
(ns something
(:require [flambo.conf : conf]
[flambo.api :as f]))
(def c (-> (conf/spark-conf)
(conf/master "spark://formcept008.lan:7077")
(conf/app-name "clustering"))) ;; app-name
(def sc (f/spark-context c))
Then I am creating an RDD-
(f/parallelize sc DATA)
Now when I am performing some action on this data, like (f/take rdd 3) etc, I am getting an error-
17/11/28 14:35:00 ERROR Utils: Exception encountered
org.apache.spark.SparkException: Failed to register classes with Kryo
at org.apache.spark.serializer.KryoSerializer.newKryo(KryoSerializer.scala:129)
at org.apache.spark.serializer.KryoSerializerInstance.borrowKryo(KryoSerializer.scala:274)
at org.apache.spark.serializer.KryoSerializerInstance.(KryoSerializer.scala:259)
at org.apache.spark.serializer.KryoSerializer.newInstance(KryoSerializer.scala:175)
at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply$mcV$sp(ParallelCollectionRDD.scala:79)
at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply(ParallelCollectionRDD.scala:70)
at org.apache.spark.rdd.ParallelCollectionPartition$$anonfun$readObject$1.apply(ParallelCollectionRDD.scala:70)
at org.apache.spark.util.Utils$.tryOrIOException(Utils.scala:1273)
at org.apache.spark.rdd.ParallelCollectionPartition.readObject(ParallelCollectionRDD.scala:70)
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 java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1058)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1909)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373)
at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75)
at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:253)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: flambo.kryo.BaseFlamboRegistrator
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at org.apache.spark.serializer.KryoSerializer$$anonfun$newKryo$5.apply(KryoSerializer.scala:124)
at org.apache.spark.serializer.KryoSerializer$$anonfun$newKryo$5.apply(KryoSerializer.scala:124)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:234)
at scala.collection.IndexedSeqOptimized$class.foreach(IndexedSeqOptimized.scala:33)
at scala.collection.mutable.ArrayOps$ofRef.foreach(ArrayOps.scala:186)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:234)
at scala.collection.mutable.ArrayOps$ofRef.map(ArrayOps.scala:186)
at org.apache.spark.serializer.KryoSerializer.newKryo(KryoSerializer.scala:124)
... 27 more
17/11/28 14:35:00 ERROR Executor: Exception in task 0.0 in stage 0.0 (TID 0)
java.lang.IllegalStateException: unread block data
at java.io.ObjectInputStream$BlockDataInputStream.setBlockDataMode(ObjectInputStream.java:2449)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1385)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:2018)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1942)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1808)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1353)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:373)
at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:75)
at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:114)
at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:253)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Any thoughts on that, please.
flambo doesn't seem to be in your classpath somehow which is why you're getting:
java.lang.ClassNotFoundException: flambo.kryo.BaseFlamboRegistrator
Are you running this from the REPL or are you using a lein or boot task?
if you're using leiningen check your classpath (lein classpath) and dependency tree (lein deps :tree)
Also, it never hurts to do a lein clean to make sure your target folder isn't causing issues
Stack trace analysis:
The Failed to register classes with Kryo is caused because flambo.kryo.BaseFlamboRegistrator is missing
Solved.
Add all the jars of your project in spark-configuration by using -
(conf/jars (map #(.getPath % (.getURLs(java.lang.ClassLoader/getSystemClassLoader))))
It will register all the classes.
Since this issue is resolved, so closing it.

Error in migrating OWL data into GRAKN

I am trying to migrate a OWL data into GRAKN using the migration script as described here. I started my GRAKN engine and then executed ./migration.sh owl -i /home/file1.owl -k grakn but I get this error:
Migrating data /home/file1.owl using Grakn Engine localhost:4567 into graph grakn
Exception in thread "main" java.lang.RuntimeException: java.lang.IllegalArgumentException: Graph Factory [ai.grakn.factory.TitanInternalFactory] is not valid
at ai.grakn.factory.FactoryBuilder.newFactory(FactoryBuilder.java:101)
at ai.grakn.factory.FactoryBuilder.getGraknGraphFactory(FactoryBuilder.java:82)
at ai.grakn.factory.FactoryBuilder.getFactory(FactoryBuilder.java:62)
at ai.grakn.factory.GraknSessionImpl.configureGraphFactoryRemote(GraknSessionImpl.java:153)
at ai.grakn.factory.GraknSessionImpl.configureGraphFactory(GraknSessionImpl.java:134)
at ai.grakn.factory.GraknSessionImpl.getConfiguredFactory(GraknSessionImpl.java:90)
at ai.grakn.factory.GraknSessionImpl.open(GraknSessionImpl.java:79)
at ai.grakn.migration.owl.Main.runOwl(Main.java:64)
at java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:184)
at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193)
at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
at java.util.Collections$2.tryAdvance(Collections.java:4717)
at java.util.Collections$2.forEachRemaining(Collections.java:4725)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481)
at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471)
at java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:151)
at java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:174)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:418)
at ai.grakn.migration.owl.Main.main(Main.java:52)
Caused by: java.lang.reflect.InvocationTargetException
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 ai.grakn.factory.FactoryBuilder.newFactory(FactoryBuilder.java:99)
... 19 more
Caused by: java.lang.IllegalArgumentException: Could not instantiate implementation: com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager
at com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:55)
at com.thinkaurelius.titan.diskstorage.Backend.getImplementationClass(Backend.java:473)
at com.thinkaurelius.titan.diskstorage.Backend.getStorageManager(Backend.java:407)
at com.thinkaurelius.titan.graphdb.configuration.GraphDatabaseConfiguration.<init>(GraphDatabaseConfiguration.java:1325)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:94)
at com.thinkaurelius.titan.core.TitanFactory.open(TitanFactory.java:84)
at com.thinkaurelius.titan.core.TitanFactory$Builder.open(TitanFactory.java:139)
at ai.grakn.factory.TitanInternalFactory.configureGraph(TitanInternalFactory.java:113)
at ai.grakn.factory.TitanInternalFactory.newTitanGraph(TitanInternalFactory.java:88)
at ai.grakn.factory.TitanInternalFactory.buildTinkerPopGraph(TitanInternalFactory.java:84)
at ai.grakn.factory.TitanInternalFactory.buildTinkerPopGraph(TitanInternalFactory.java:60)
at ai.grakn.factory.AbstractInternalFactory.getTinkerPopGraph(AbstractInternalFactory.java:141)
at ai.grakn.factory.AbstractInternalFactory.getTinkerPopGraph(AbstractInternalFactory.java:135)
at ai.grakn.factory.AbstractInternalFactory.getGraph(AbstractInternalFactory.java:110)
at ai.grakn.factory.AbstractInternalFactory.open(AbstractInternalFactory.java:95)
at ai.grakn.factory.SystemKeyspace.loadSystemOntology(SystemKeyspace.java:114)
at ai.grakn.factory.FactoryBuilder.newFactory(FactoryBuilder.java:107)
at ai.grakn.factory.FactoryBuilder.getGraknGraphFactory(FactoryBuilder.java:82)
at ai.grakn.factory.AbstractInternalFactory.getSystemFactory(AbstractInternalFactory.java:80)
at ai.grakn.factory.AbstractInternalFactory.<init>(AbstractInternalFactory.java:74)
at ai.grakn.factory.TitanInternalFactory.<init>(TitanInternalFactory.java:64)
... 24 more
Caused by: java.lang.reflect.InvocationTargetException
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 com.thinkaurelius.titan.util.system.ConfigurationUtil.instantiate(ConfigurationUtil.java:44)
... 44 more
Caused by: com.thinkaurelius.titan.diskstorage.TemporaryBackendException: Temporary failure in storage backend
at com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager.ensureKeyspaceExists(AstyanaxStoreManager.java:580)
at com.thinkaurelius.titan.diskstorage.cassandra.astyanax.AstyanaxStoreManager.<init>(AstyanaxStoreManager.java:291)
... 49 more
Is there any mistake in the command I am executing to do the migration? What can I do to resolve this issue?
UPDATE: I was able to resolve the above issue but now I am getting following error in trying to start the graql shell:
Exception in thread "graql-session-0" java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
at java.util.HashMap$ValueIterator.next(HashMap.java:1466)
at ai.grakn.graph.internal.AbstractGraknGraph.loadOntologyCacheIntoTransactionCache(AbstractGraknGraph.java:337)
at ai.grakn.graph.internal.AbstractGraknGraph.getConceptLog(AbstractGraknGraph.java:307)
at ai.grakn.graph.internal.AbstractGraknGraph.buildType(AbstractGraknGraph.java:450)
at ai.grakn.graph.internal.AbstractGraknGraph.getTypeByLabel(AbstractGraknGraph.java:548)
at ai.grakn.graph.internal.AbstractGraknGraph.getMetaConcept(AbstractGraknGraph.java:608)
at ai.grakn.engine.session.GraqlSession.getTypes(GraqlSession.java:371)
at ai.grakn.engine.session.GraqlSession.sendTypes(GraqlSession.java:348)
at ai.grakn.engine.session.GraqlSession.lambda$new$48(GraqlSession.java:105)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)

Why Weka snapshot version won't start (or after some library installation)?

Problem encountered
There are two situations I met when I failed to start weka snapshot version with java -jar weka.jar
when I downloaded the snapshot version and start it for the first time
after I have installed a new weka library, and start snapshot again from terminal
I have found error messages as below:
Exception in thread "main" java.lang.InternalError: Failed to invoke main method
weka.gui.SplashWindow.invokeMain(SplashWindow.java:308)
weka.gui.GUIChooser.main(GUIChooser.java:92)
at weka.gui.SplashWindow.invokeMain(SplashWindow.java:308)
at weka.gui.GUIChooser.main(GUIChooser.java:92)
Caused by: java.lang.reflect.InvocationTargetException
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:497)
at weka.gui.SplashWindow.invokeMain(SplashWindow.java:305)
... 1 more
Caused by: java.lang.VerifyError: Bad access to protected data in invokevirtual
Exception Details:
Location:
weka/filters/MakePreconstructedFilter.setConstructed()V #11: invokevirtual
Reason:
Type 'weka/filters/Filter' (current frame, stack[0]) is not assignable to 'weka/filters/MakePreconstructedFilter'
Current Frame:
bci: #11
flags: { }
locals: { 'weka/filters/MakePreconstructedFilter' }
stack: { 'weka/filters/Filter' }
Bytecode:
0x0000000: 2ab6 0021 c600 122a b600 21b6 0023 c600
0x0000010: 082a 03b5 0002 b1
Stackmap Table:
same_frame(#22)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:198)
at weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:178)
at weka.core.ClassDiscovery.find(ClassDiscovery.java:351)
at weka.gui.GenericPropertiesCreator.generateOutputProperties(GenericPropertiesCreator.java:541)
at weka.gui.GenericPropertiesCreator.execute(GenericPropertiesCreator.java:638)
at weka.gui.GenericPropertiesCreator.execute(GenericPropertiesCreator.java:614)
at weka.core.converters.ConverterUtils.initialize(ConverterUtils.java:748)
at weka.core.converters.ConverterUtils.<clinit>(ConverterUtils.java:729)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:348)
at weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:198)
at weka.core.WekaPackageClassLoaderManager.forName(WekaPackageClassLoaderManager.java:178)
at weka.core.ClassDiscovery.find(ClassDiscovery.java:351)
at weka.gui.GenericPropertiesCreator.generateOutputProperties(GenericPropertiesCreator.java:541)
at weka.gui.GenericPropertiesCreator.execute(GenericPropertiesCreator.java:638)
at weka.gui.GenericPropertiesCreator.<clinit>(GenericPropertiesCreator.java:166)
at weka.core.WekaPackageManager.processGenericPropertiesCreatorProps(WekaPackageManager.java:587)
at weka.core.WekaPackageManager.loadPackages(WekaPackageManager.java:1196)
at weka.core.WekaPackageManager.loadPackages(WekaPackageManager.java:1091)
at weka.gui.GenericObjectEditor.determineClasses(GenericObjectEditor.java:192)
at weka.gui.GenericObjectEditor.<clinit>(GenericObjectEditor.java:262)
at weka.gui.GUIChooserApp.<init>(GUIChooserApp.java:748)
at weka.gui.GUIChooserApp.createSingleton(GUIChooserApp.java:261)
at weka.gui.GUIChooserApp.main(GUIChooserApp.java:1816)
... 6 more
Problem identification:
Installation of DistributedWekaBase and DistributedWekaSpark
Solution
go to Home directory/wekafiles/packages/
find those libraries and other unnecessary libraries
delete them
restart weka

java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/filter/Filter : while running Mapreduce job

I am running MR program in my cluster. I made sure I have correct class path exported. But I still see the error. I have followed the following steps to run this program.
1)
export HADOOP_CLASSPATH=/etc/hbase/conf:/usr/lib/hbase/lib/*.jar:/usr/lib/zookeeper/zookeeper-3.4.5.2.0.6.0-101.jar:/usr/lib/hbase/lib/hbase-client-0.96.1.2.0.6.1-101-hadoop2.jar:.:
2)
hadoop jar /XMLAnalytics/Appcode/MR/XMLload.jaredm.bigdata.hadoop.xmlanalytics.stagingprocess.SplitXMLProcessDriver/XMLAnalytics/Input/TestData/Claims/SPLIT_CLAIM_FOLDER_WORK.xml/XMLAnalytics/Staging/Output/TestData/Claims/ 123 pega Claims
Error:
Error: java.lang.RuntimeException:
java.lang.reflect.InvocationTargetException
at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:131)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:721)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:339)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:162)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1491)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:157) Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:129)
... 7 more Caused by: java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/filter/Filter
at edm.bigdata.hadoop.xmlanalytics.stagingprocess.SplitXMLProcessMapper.(SplitXMLProcessMapper.java:49)
... 12 more Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.filter.Filter
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
... 13 more
echo `hbase classpath`
/usr/lib/hbase/bin/../conf:/usr/java/default/lib/tools.jar:/usr/lib/hbase/bin/..:/usr/lib/hbase/bin/../lib/activation-1.1.jar:/usr/lib/hbase/bin/../lib/aopalliance-1.0.jar:/usr/lib/hbase/bin/../lib/asm-3.1.jar:/usr/lib/hbase/bin/../lib/avro-1.7.4.jar:/usr/lib/hbase/bin/../lib/commons-beanutils-1.7.0.jar:/usr/lib/hbase/bin/../lib/commons-beanutils-core-1.8.0.jar:/usr/lib/hbase/bin/../lib/commons-cli-1.2.jar:/usr/lib/hbase/bin/../lib/commons-codec-1.7.jar:/usr/lib/hbase/bin/../lib/commons-collections-3.2.1.jar:/usr/lib/hbase/bin/../lib/commons-compress-1.4.1.jar:/usr/lib/hbase/bin/../lib/commons-configuration-1.6.jar:/usr/lib/hbase/bin/../lib/commons-daemon-1.0.13.jar:/usr/lib/hbase/bin/../lib/commons-digester-1.8.jar:/usr/lib/hbase/bin/../lib/commons-el-1.0.jar:/usr/lib/hbase/bin/../lib/commons-httpclient-3.1.jar:/usr/lib/hbase/bin/../lib/commons-io-2.4.jar:/usr/lib/hbase/bin/../lib/commons-lang-2.6.jar:/usr/lib/hbase/bin/../lib/commons-logging-1.1.1.jar:/usr/lib/hbase/bin/../lib/commons-math-2.2.jar:/usr/lib/hbase/bin/../lib/commons-net-3.1.jar:/usr/lib/hbase/bin/../lib/core-3.1.1.jar:/usr/lib/hbase/bin/../lib/findbugs-annotations-1.3.9-1.jar:/usr/lib/hbase/bin/../lib/gmbal-api-only-3.0.0-b023.jar:/usr/lib/hbase/bin/../lib/grizzly-framework-2.1.2.jar:/usr/lib/hbase/bin/../lib/grizzly-http-2.1.2.jar:/usr/lib/hbase/bin/../lib/grizzly-http-server-2.1.2.jar:/usr/lib/hbase/bin/../lib/grizzly-http-servlet-2.1.2.jar:/usr/lib/hbase/bin/../lib/grizzly-rcm-2.1.2.jar:/usr/lib/hbase/bin/../lib/guava-12.0.1.jar:/usr/lib/hbase/bin/../lib/guice-3.0.jar:/usr/lib/hbase/bin/../lib/guice-servlet-3.0.jar:/usr/lib/hbase/bin/../lib/hamcrest-core-1.3.jar:/usr/lib/hbase/bin/../lib/hbase-client-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-common-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-common-0.96.1.2.0.6.1-101-hadoop2-tests.jar:/usr/lib/hbase/bin/../lib/hbase-examples-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-hadoop2-compat-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-hadoop-compat-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-it-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-it-0.96.1.2.0.6.1-101-hadoop2-tests.jar:/usr/lib/hbase/bin/../lib/hbase-prefix-tree-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-protocol-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-server-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-server-0.96.1.2.0.6.1-101-hadoop2-tests.jar:/usr/lib/hbase/bin/../lib/hbase-shell-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-testing-util-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/hbase-thrift-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/lib/hbase/bin/../lib/high-scale-lib-1.1.1.jar:/usr/lib/hbase/bin/../lib/htrace-core-2.01.jar:/usr/lib/hbase/bin/../lib/httpclient-4.1.3.jar:/usr/lib/hbase/bin/../lib/httpcore-4.1.3.jar:/usr/lib/hbase/bin/../lib/jackson-core-asl-1.8.8.jar:/usr/lib/hbase/bin/../lib/jackson-jaxrs-1.8.8.jar:/usr/lib/hbase/bin/../lib/jackson-mapper-asl-1.8.8.jar:/usr/lib/hbase/bin/../lib/jackson-xc-1.8.8.jar:/usr/lib/hbase/bin/../lib/jamon-runtime-2.3.1.jar:/usr/lib/hbase/bin/../lib/jasper-compiler-5.5.23.jar:/usr/lib/hbase/bin/../lib/jasper-runtime-5.5.23.jar:/usr/lib/hbase/bin/../lib/javax.inject-1.jar:/usr/lib/hbase/bin/../lib/javax.servlet-3.1.jar:/usr/lib/hbase/bin/../lib/javax.servlet-api-3.0.1.jar:/usr/lib/hbase/bin/../lib/jaxb-api-2.2.2.jar:/usr/lib/hbase/bin/../lib/jaxb-impl-2.2.3-1.jar:/usr/lib/hbase/bin/../lib/jersey-client-1.9.jar:/usr/lib/hbase/bin/../lib/jersey-core-1.8.jar:/usr/lib/hbase/bin/../lib/jersey-grizzly2-1.9.jar:/usr/lib/hbase/bin/../lib/jersey-guice-1.9.jar:/usr/lib/hbase/bin/../lib/jersey-json-1.8.jar:/usr/lib/hbase/bin/../lib/jersey-server-1.8.jar:/usr/lib/hbase/bin/../lib/jersey-test-framework-core-1.9.jar:/usr/lib/hbase/bin/../lib/jersey-test-framework-grizzly2-1.9.jar:/usr/lib/hbase/bin/../lib/jets3t-0.6.1.jar:/usr/lib/hbase/bin/../lib/jettison-1.3.1.jar:/usr/lib/hbase/bin/../lib/jetty-6.1.26.jar:/usr/lib/hbase/bin/../lib/jetty-sslengine-6.1.26.jar:/usr/lib/hbase/bin/../lib/jetty-util-6.1.26.jar:/usr/lib/hbase/bin/../lib/jruby-complete-1.6.8.jar:/usr/lib/hbase/bin/../lib/jsch-0.1.42.jar:/usr/lib/hbase/bin/../lib/jsp-2.1-6.1.14.jar:/usr/lib/hbase/bin/../lib/jsp-api-2.1-6.1.14.jar:/usr/lib/hbase/bin/../lib/jsp-api-2.1.jar:/usr/lib/hbase/bin/../lib/jsr305-1.3.9.jar:/usr/lib/hbase/bin/../lib/junit-4.11.jar:/usr/lib/hbase/bin/../lib/libthrift-0.9.0.jar:/usr/lib/hbase/bin/../lib/log4j-1.2.17.jar:/usr/lib/hbase/bin/../lib/management-api-3.0.0-b012.jar:/usr/lib/hbase/bin/../lib/metrics-core-2.1.2.jar:/usr/lib/hbase/bin/../lib/netty-3.6.6.Final.jar:/usr/lib/hbase/bin/../lib/paranamer-2.3.jar:/usr/lib/hbase/bin/../lib/protobuf-java-2.5.0.jar:/usr/lib/hbase/bin/../lib/servlet-api-2.5-6.1.14.jar:/usr/lib/hbase/bin/../lib/servlet-api-2.5.jar:/usr/lib/hbase/bin/../lib/slf4j-api-1.6.4.jar:/usr/lib/hbase/bin/../lib/snappy-java-1.0.4.1.jar:/usr/lib/hbase/bin/../lib/stax-api-1.0.1.jar:/usr/lib/hbase/bin/../lib/xmlenc-0.52.jar:/usr/lib/hbase/bin/../lib/xz-1.0.jar:/usr/lib/hbase/bin/../lib/zookeeper.jar:/etc/hadoop/conf:/usr/lib/hadoop/lib/:/usr/lib/hadoop/.//:/usr/lib/hadoop-hdfs/./:/usr/lib/hadoop-hdfs/lib/:/usr/lib/hadoop-hdfs/.//:/usr/lib/hadoop-yarn/lib/:/usr/lib/hadoop-yarn/.//:/usr/lib/hadoop-mapreduce/lib/:/usr/lib/hadoop-mapreduce/.//:/etc/hbase/conf:/usr/lib/hbase/lib/.jar:/usr/lib/zookeeper/zookeeper-3.4.5.2.0.6.0-101.jar:/usr/lib/hbase/lib/hbase-client-0.96.1.2.0.6.1-101-hadoop2.jar:/usr/share/java/mysql-connector-java-5.1.17.jar:/usr/share/java/mysql-connector-java.jar:/usr/lib/hadoop-mapreduce/:/etc/hadoop/conf:/:/lib/:/usr/lib/zookeeper/:/usr/lib/zookeeper/lib/:

WSO2 Developer Studio Registry Browser Perspective Exception

I am geting an exception in the eclipse logs hen I try to access my registry entries in the Registry Browser perspective (and when I try to import registry entries into a registry project).
the exception is as follows: (any assistance would be much appreciated)
!MESSAGE java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.abdera.parser.stax.FOMParser
!STACK 0
java.lang.RuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.abdera.parser.stax.FOMParser
at org.apache.abdera.util.Discover.locate(Discover.java:56)
at org.apache.abdera.util.Discover.locate(Discover.java:23)
at org.apache.abdera.util.AbderaConfiguration.newParserInstance(AbderaConfiguration.java:320)
at org.apache.abdera.Abdera.newParser(Abdera.java:224)
at org.apache.abdera.Abdera.getParser(Abdera.java:156)
at org.apache.abdera.protocol.client.AbstractClientResponse.<init>(AbstractClientResponse.java:57)
at org.apache.abdera.protocol.client.CommonsResponse.<init>(CommonsResponse.java:44)
at org.apache.abdera.protocol.client.AbderaClient.execute(AbderaClient.java:796)
at org.apache.abdera.protocol.client.AbderaClient.get(AbderaClient.java:235)
at org.wso2.carbon.registry.app.RemoteRegistry.get(RemoteRegistry.java:162)
at org.wso2.developerstudio.eclipse.greg.base.core.Registry.get(Registry.java:825)
at org.wso2.developerstudio.eclipse.greg.manager.remote.views.ResourceInfoViewer.updateGeneralInfo(ResourceInfoViewer.java:269)
at org.wso2.developerstudio.eclipse.greg.manager.remote.views.ResourceInfoViewer.updateInfo(ResourceInfoViewer.java:224)
at org.wso2.developerstudio.eclipse.greg.manager.remote.views.ResourceInfoViewer.updateMe(ResourceInfoViewer.java:334)
at org.wso2.developerstudio.eclipse.greg.manager.remote.views.RegistryBrowserView$48.widgetSelected(RegistryBrowserView.java:2391)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:248)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4134)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1458)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1481)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1466)
at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:1271)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3980)
at org.eclipse.swt.widgets.Display.applicationNextEventMatchingMask(Display.java:4869)
at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5239)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:221)
at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1093)
at org.eclipse.swt.widgets.Tree.mouseDownSuper(Tree.java:2052)
at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1085)
at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2538)
at org.eclipse.swt.widgets.Tree.mouseDown(Tree.java:2007)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:5493)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:221)
at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2102)
at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2284)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:5557)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5002)
at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5151)
at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:128)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3616)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1022)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:916)
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:86)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:585)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:540)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:124)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:353)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:629)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:584)
at org.eclipse.equinox.launcher.Main.run(Main.java:1438)
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: org.apache.abdera.parser.stax.FOMParser
at org.apache.abdera.util.Discover.getClass(Discover.java:235)
at org.apache.abdera.util.Discover.load(Discover.java:210)
at org.apache.abdera.util.Discover.locate(Discover.java:47)
... 64 more
Caused by: java.lang.ClassNotFoundException: org.apache.abdera.parser.stax.FOMParser
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.apache.abdera.util.Discover.getClass(Discover.java:231)
... 66 more