LimitedExecutorTest.testConcurrencyLimit random failures -------------------------------------------------------- Key: ISPN-7141 URL: https://issues.jboss.org/browse/ISPN-7141 Project: Infinispan Issue Type: Bug Components: Test Suite - Core Reporter: Dan Berindei Assignee: Dan Berindei Priority: Critical Labels: testsuite_stability Fix For: 9.0.0.Beta1 The test reuses a single executor for all test methods, and it is limited to 1 thread. It can take some time between the completion of the {{CompletableFuture}} that the test waits for and the executor thread being actually releases, and that can make the next test method throw a {{RejectedExecutionException}}. {noformat} 20:37:37,952 ERROR (testng-Test:[]) [TestSuiteProgress] Test failed: org.infinispan.executors.LimitedExecutorTest.testConcurrencyLimit java.util.concurrent.RejectedExecutionException: Task org.infinispan.executors.LimitedExecutor$Runner@5bda0b48 rejected from java.util.concurrent.ThreadPoolExecutor@34d8a229[Running, pool size = 1, active threads = 1, queued tasks = 0, completed tasks = 1] at java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2047) ~[?:1.8.0_101] at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:823) ~[?:1.8.0_101] at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1369) ~[?:1.8.0_101] at org.infinispan.executors.LimitedExecutor.tryExecute(LimitedExecutor.java:117) ~[classes/:?] at org.infinispan.executors.LimitedExecutor.executeInternal(LimitedExecutor.java:92) ~[classes/:?] at org.infinispan.executors.LimitedExecutor.execute(LimitedExecutor.java:82) ~[classes/:?] at org.infinispan.executors.LimitedExecutorTest.testConcurrencyLimit(LimitedExecutorTest.java:51) ~[test-classes/:?] {noformat}