JpaStoreTest.testPreload fails randomly on IBM Java

java.lang.AssertionError: expected:<3> but was:<4>
	at org.testng.AssertJUnit.fail(AssertJUnit.java:59)
	at org.testng.AssertJUnit.failNotEquals(AssertJUnit.java:364)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:80)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:245)
	at org.testng.AssertJUnit.assertEquals(AssertJUnit.java:252)
	at org.infinispan.persistence.BaseStoreTest.testPreload(BaseStoreTest.java:300)
	at org.infinispan.it.osgi.persistence.jpa.JpaStoreTest.testPreload(JpaStoreTest.java:76)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:94)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
	at java.lang.reflect.Method.invoke(Method.java:619)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)