Anna Manukyan created ISPN-2443: ----------------------------------- Summary: DistributedTaskPart get(timeout, TimeUnit) throws ClassCastException in case the execution is not finished after specified time Key: ISPN-2443 URL: https://issues.jboss.org/browse/ISPN-2443 Project: Infinispan Issue Type: Bug Components: Distributed Execution and Map/Reduce Reporter: Anna Manukyan Assignee: Vladimir Blagojevic The issue appears almost every time the test is executed. The case is the following: 1. Callable<Integer> is submitted to DistributedExecutorService for execution; The callable body consists of simple Thread.sleep(i) which makes the callable to sleep for specific period of time. 2. Result is taken with get(long timeout, TimeUnit unit) method; The timeout is given so that, it is much more shorter than the sleeping time of the callable. But sometimes it happens, that the get(timeout, unit) waits till the end. I guess this happens due to priority of threads. 3. In case of expected execution flow, i.e. if the method execution takes longer than the specified timeout, the following exception is thrown: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.util.Map at org.infinispan.distexec.DefaultExecutorService$DistributedTaskPart.retrieveResult(DefaultExecutorService.java:882) at org.infinispan.distexec.DefaultExecutorService$DistributedTaskPart.get(DefaultExecutorService.java:818) at org.infinispan.distexec.DistributedExecutorTest.testSleepingCallableWithTimeoutOption(DistributedExecutorTest.java:336) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:74) at org.testng.internal.Invoker.invokeMethod(Invoker.java:673) at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:846) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1170) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109) at org.testng.TestRunner.runWorkers(TestRunner.java:1147) at org.testng.TestRunner.privateRun(TestRunner.java:749) at org.testng.TestRunner.run(TestRunner.java:600) at org.testng.SuiteRunner.runTest(SuiteRunner.java:317) at org.testng.SuiteRunner.access$000(SuiteRunner.java:34) at org.testng.SuiteRunner$SuiteWorker.run(SuiteRunner.java:351) at org.testng.internal.thread.ThreadUtil$CountDownLatchedRunnable.run(ThreadUtil.java:147) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira