I have a scenario where we have to run some random number of independent tasks to load data from DB. So I am using Java's fork Join framework to create those task and then invoke them.
Each task opens its own connection using datasource and closes it. But in Tomcat, I am getting below error at line: initialContext = new InitialContext(); javax.naming.NoInitialContextException: Cannot instantiate class: org.apache.naming.java.javaURLContextFactory at javax.naming.spi.NamingManager.getInitialContext(Unknown Source) ~[?:1.8.0_161] at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source) ~[?:1.8.0_161] at javax.naming.InitialContext.init(Unknown Source) ~[?:1.8.0_161] at javax.naming.InitialContext.<init>(Unknown Source) ~[?:1.8.0_161] at com.dummy.test.TestClass.compute(TestClass.java:71) [classes/:?] at java.util.concurrent.RecursiveAction.exec(Unknown Source) [?:1.8.0_161] at java.util.concurrent.ForkJoinTask.doExec(Unknown Source) [?:1.8.0_161] at java.util.concurrent.ForkJoinPool$WorkQueue.execLocalTasks(Unknown Source) [?:1.8.0_161] at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(Unknown Source) [?:1.8.0_161] at java.util.concurrent.ForkJoinPool.runWorker(Unknown Source) [?:1.8.0_161] at java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source) [?:1.8.0_161] Caused by: java.lang.ClassNotFoundException: org.apache.naming.java.javaURLContextFactory This error seems to be coming only in Tomcat and when I run the same code in Wildfly/Glassfish or JBOSS EAP, everything works fine. On the other hand if I change my code and run these tasks using Thread instead of Fork Join framework, I don't face this issue in Tomcat. So why this error is coming in Tomcat only? Note: I am getting this error after deploying in Tomcat and hitting app URL from Postman. The so called missing class is already there in jar catalina.jar present inside <Tomcat_Home>/lib Environment Details: Java Version: 1.8 Tomcat Version: 8.5, 9.0.6 OS: Windows 10 Pro 64 bit Database: Oracle 11g and MySQL 5.7 I have uploaded a dummy code to simulate this issue in Git. Please refer to the readme.txt for full details there. Git URL: https://github.com/wambling/my-project.git Regards, Priyam
