Intermittent NPE when removing data sources ------------------------------------------- Key: WFLY-5023 URL: https://issues.jboss.org/browse/WFLY-5023 Project: WildFly Issue Type: Bug Components: JCA Affects Versions: 10.0.0.Alpha6 Reporter: Jan Martiska Assignee: Stefano Maestri Attachments: many-datasources.cli, remove-datasources.cli When removing a datasource, sporadically this exception appears in the log: {noformat} 12:49:58,224 WARN [org.jboss.msc.service.fail] (MSC service thread 1-8) MSC000004: Failure during stop of service org.wildfly.data-source.ds51: java.lang.NullPointerException at org.jboss.as.connector.subsystems.datasources.AbstractDataSourceService.stop(AbstractDataSourceService.java:161) at org.jboss.msc.service.ServiceControllerImpl$StopTask.stopService(ServiceControllerImpl.java:2056) at org.jboss.msc.service.ServiceControllerImpl$StopTask.run(ServiceControllerImpl.java:2017) 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) {noformat} This doesn't seem to happen on WildFly 9.x, only on recent master. I suspect that this could lead to some resource leaks, but didn't study it further. From git history, it looks like this might be caused by the fix for https://issues.jboss.org/browse/WFLY-4429