StrongCounterAPITest.testAdd fails intermittently

testAdd

java.lang.AssertionError: expected:<20> but was:<30> at org.infinispan.server.hotrod.counter.impl.StrongCounterImplTestStrategy.add(StrongCounterImplTestStrategy.java:142) at org.infinispan.server.hotrod.counter.impl.StrongCounterImplTestStrategy.add(StrongCounterImplTestStrategy.java:36) at org.infinispan.server.hotrod.counter.impl.BaseCounterImplTest.testAdd(BaseCounterImplTest.java:64) at org.infinispan.client.hotrod.counter.StrongCounterAPITest.testAdd(StrongCounterAPITest.java:52) at org.infinispan.commons.test.TestNGLongTestsHook.run(TestNGLongTestsHook.java:24) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) ... Removed 23 stack frames