[jbosstools-issues] [JBoss JIRA] (JBIDE-21707) NullPointerException in JobResultFuture

NullPointerException in JobResultFuture --------------------------------------- Key: JBIDE-21707 URL: https://issues.jboss.org/browse/JBIDE-21707 Project: Tools (JBoss Tools) Issue Type: Bug Components: common/jst/core, openshift Affects Versions: 4.3.1.Beta2 Reporter: Viacheslav Kabanovich Assignee: Viacheslav Kabanovich Fix For: 4.3.1.CR1 {code} java.lang.NullPointerException at org.jboss.tools.common.ui.JobResultFuture.cancel(JobResultFuture.java:49) at org.jboss.tools.common.ui.WizardUtils.waitForFuture(WizardUtils.java:157) at org.jboss.tools.common.ui.WizardUtils.access$0(WizardUtils.java:151) at org.jboss.tools.common.ui.WizardUtils$1.run(WizardUtils.java:139) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:119) {code} For some time I could reproduce the exception in this steps: 1. Close Eclipse with OpenShift Explorer active and password for a connection unsaved. 2. Open Eclipse - Sign In to OpenShift wizard appears. 3. Enter password and finish. 4. Progress appears but job does not start (I checked it in debugger) - ui jobs locked. 5. Only red button cancelling connection is active, press it - null pointer exception, ui is unlocked. 6. Start Sign In to OpenShift wizard with context menu - it can be completed successfully, connection is established. Later, after I received latest commits, the ui jobs lock could not be reproduced, so for now I do not report this usecase as a bug. But it is still possible to reproduce the same null pointer using breakpoints in debugger, because it happens if job is cancelled through JobResultFuture before job manager can start it.