Hi, I am now running Tomcat version 10.0.16 having just upgraded from 9.0.41. As a developer, I make use of the META-INF\context.xml feature to detect changes within the classes folder WEB-INF\classes by
<Context reloadable="true"></Context> However, since moving to Tomcat 10.0.16, the reload keeps crashing Tomcat due to the fact that Netbeans is recompiling multiple files and as soon as the first file is completed, I believe that Tomcat triggers its reload process and then fails as one of the listener classes is still in the process of being rebuilt by Netbeans and so Tomcat can’t access it for that split second to install the listener. If I shut down Tomcat and re-open it again, all is well as Netbeans has then had time to finish the re-compile. If I make a change within the implementation of (say) one of the listeners, so that Netbeans only has to re-compile that one .class file, then Tomcat reloads the application perfectly. Therefore, I was looking for the ability to add a delay to force Tomcat, on having detected a change in one of the files, to wait a moment to let Netbeans finish its job. I have researched the relevant help files and read through https://tomcat.apache.org/tomcat-8.0-doc/config/context.html and can’t see any additional attribute that might handle this scenario. If there isn’t an option, is it valid to raise it in the Bug Database? I have searched the existing list and can’t see any previous mention of it. For some reason, I didn’t experience this while using Tomcat 9.0.41, but it may have been slower to react to the .class files being change and so did not have an issue with the files not being available while they were being recompiled. The relevant part of the log is as below 17-Feb-2022 14:47:54.861 SEVERE [Catalina-utility-2] org.apache.catalina.core.StandardContext.listenerStart Error configuring application listener of class [Listener.DataDictionary] java.lang.ClassNotFoundException: Listener.DataDictionary at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1444) at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1252) at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:535) at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:516) at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:150) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4640) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5179) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3781) at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:268) at org.apache.catalina.core.StandardContext.backgroundProcess(StandardContext.java:5562) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1365) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1369) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1369) at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1347) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539) at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:833) 17-Feb-2022 14:47:54.861 SEVERE [Catalina-utility-2] org.apache.catalina.core.StandardContext.listenerStart Skipped installing application listeners due to previous error(s) Thanks in advance and here’s hoping to not have to have to keep Stopping & Starting Tomcat for every development change. John --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
