drools-7.31 expert missing/ dropped ProjectClassLoader class? ------------------------------------------------------------- Key: DROOLS-4952 URL: https://issues.redhat.com/browse/DROOLS-4952 Project: Drools Issue Type: Bug Components: core engine Affects Versions: 7.31.0.Final Reporter: John Harrison Assignee: Mario Fusco Priority: Major I'm compiling/ running rules using expert (drools-7.31) and java 13.0.1, and getting errors like the following: {code:java} java.lang.NoClassDefFoundError: org/drools/reflective/classloader/ProjectClassLoader [context - 1447]: at org.drools.core.impl.KnowledgeBaseFactory.newKnowledgeBase(KnowledgeBaseFactory.java:106) [context - 1447]: at org.drools.core.impl.KnowledgeBaseFactory.newKnowledgeBase(KnowledgeBaseFactory.java:80) [context - 1447]: at org.drools.core.impl.KnowledgeBaseFactory.newKnowledgeBase(KnowledgeBaseFactory.java:64) [context - 1447]: at Reason$Descriptor.reason(Reason.java:459) [context - 1447]: at Reason.lambda$run$1(Reason.java:82) [context - 1447]: at io.javalin.core.security.SecurityUtil.noopAccessManager(SecurityUtil.kt:22) [context - 1447]: at io.javalin.http.JavalinServlet$addHandler$protectedHandler$1.handle(JavalinServlet.kt:116) [context - 1447]: at io.javalin.http.JavalinServlet$service$2$1.invoke(JavalinServlet.kt:45) [context - 1447]: at io.javalin.http.JavalinServlet$service$2$1.invoke(JavalinServlet.kt:24) [context - 1447]: at io.javalin.http.JavalinServlet$service$1.invoke(JavalinServlet.kt:123) [context - 1447]: at io.javalin.http.JavalinServlet$service$2.invoke(JavalinServlet.kt:40) [context - 1447]: at io.javalin.http.JavalinServlet.service(JavalinServlet.kt:75) [context - 1447]: at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [context - 1447]: at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:867) [context - 1447]: at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:542) [context - 1447]: at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) [context - 1447]: at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1588) [context - 1447]: at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) [context - 1447]: at io.javalin.core.JavalinServer$start$httpHandler$1.doHandle(JavalinServer.kt:53) [context - 1447]: at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) [context - 1447]: at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:480) [context - 1447]: at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1557) [context - 1447]: at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) [context - 1447]: at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1247) [context - 1447]: at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) [context - 1447]: at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61) [context - 1447]: at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:174) [context - 1447]: at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) [context - 1447]: at org.eclipse.jetty.server.Server.handle(Server.java:502) [context - 1447]: at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:364) [context - 1447]: at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) [context - 1447]: at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:305) [context - 1447]: at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) [context - 1447]: at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) [context - 1447]: at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) [context - 1447]: at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) [context - 1447]: at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) [context - 1447]: at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) [context - 1447]: at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) [context - 1447]: at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:765) [context - 1447]: at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:683) [context - 1447]: at java.base/java.lang.Thread.run(Thread.java:830) [context - 1447]: Caused by: java.lang.ClassNotFoundException: org.drools.reflective.classloader.ProjectClassLoader [context - 1447]: at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:602) [context - 1447]: at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178) [context - 1447]: at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) [context - 1447]: ... 42 more {code} Is this class missing or removed from the distribution? The related release notes don't mention anything, and things work fine in drools-7.30 (class located in drools-core-7.30.0.Final.jar).