[jbpm-issues] [JBoss JIRA] Commented: (JBPM-2930) IllegalArgumentException on error path in DispatcherThread

IllegalArgumentException on error path in DispatcherThread ---------------------------------------------------------- Key: JBPM-2930 URL: https://jira.jboss.org/browse/JBPM-2930 Project: jBPM Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: jBPM 4.4 Environment: JBPM 4.4 upgraded from 4.3, JDK 1.6u21. Reporter: Per Christian Henden Attachments: JBPM-2930-patch.diff, ois-bpm-logg.txt DispatcherThread waits before retrying to execute a Job when there is an error. If there are multiple failures in a row, the wait period is increased in the following manner: int currentIdleInterval = jobExecutor.getIdleMillis(); //Typically a few seconds while(isActive) { .... catch (Exception e) { ... semaphore.wait(currentIdleInterval); ... currentIdleInterval = currentIdleInterval * 2; ... } } In other words, currentIdleInterval grows without bounds. Eventually the integer currentIdleInterval will overflow and semaphore.wait() will throw java.lang.IllegalArgumentException: timeout value is negative, resulting in a crash. In my case an error occurs because there are timers that refer to inactive executions (because timers that have not fired are not deleted when a subprocess ends in JBPM 4.3). This has left me with some 340 rows in JBPM4_JOB that refers to a non-existing execution. Another aspect of this problem is that the retry-wait can grow to unreasonably large values, for example multiple days, and if my calculations are correct, multiple years. A simple fix is to introduce an upper bound of for example 256 * jobExecutor.getIdleMillis(), and not increase currentIdleInterval above that.