ClearCommand hanging in the test suite

"testng-ClusteredCacheWithInfinispanDirectoryTest" #15 prio=5 os_prio=0 tid=0x00007fe220532000 nid=0x19a waiting on condition [0x00007fe1cc7dd000]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x00000007b8698d48> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
	at org.infinispan.statetransfer.StateTransferLockImpl.waitForTransactionData(StateTransferLockImpl.java:96)
	at org.infinispan.interceptors.base.BaseStateTransferInterceptor.waitForTransactionData(BaseStateTransferInterceptor.java:97)
	at org.infinispan.statetransfer.StateTransferInterceptor.handleNonTxWriteCommand(StateTransferInterceptor.java:366)
	at org.infinispan.statetransfer.StateTransferInterceptor.handleWriteCommand(StateTransferInterceptor.java:281)
	at org.infinispan.statetransfer.StateTransferInterceptor.visitClearCommand(StateTransferInterceptor.java:132)
	at org.infinispan.commands.write.ClearCommand.acceptVisitor(ClearCommand.java:44)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:99)
	at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:113)
	at org.infinispan.commands.AbstractVisitor.visitClearCommand(AbstractVisitor.java:58)
	at org.infinispan.commands.write.ClearCommand.acceptVisitor(ClearCommand.java:44)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:99)
	at org.infinispan.interceptors.InvocationContextInterceptor.handleAll(InvocationContextInterceptor.java:114)
	at org.infinispan.interceptors.InvocationContextInterceptor.handleDefault(InvocationContextInterceptor.java:83)
	at org.infinispan.commands.AbstractVisitor.visitClearCommand(AbstractVisitor.java:58)
	at org.infinispan.commands.write.ClearCommand.acceptVisitor(ClearCommand.java:44)
	at org.infinispan.interceptors.base.CommandInterceptor.invokeNextInterceptor(CommandInterceptor.java:99)
	at org.infinispan.interceptors.base.CommandInterceptor.handleDefault(CommandInterceptor.java:113)
	at org.infinispan.commands.AbstractVisitor.visitClearCommand(AbstractVisitor.java:58)
	at org.infinispan.commands.write.ClearCommand.acceptVisitor(ClearCommand.java:44)
	at org.infinispan.interceptors.InterceptorChain.invoke(InterceptorChain.java:335)
	at org.infinispan.cache.impl.CacheImpl.clear(CacheImpl.java:588)
	at org.infinispan.cache.impl.CacheImpl.clear(CacheImpl.java:579)
	at org.infinispan.test.TestingUtil.killCaches(TestingUtil.java:769)
	at org.infinispan.test.TestingUtil.killCacheManagers(TestingUtil.java:607)
	at org.infinispan.test.MultipleCacheManagersTest.clearContent(MultipleCacheManagersTest.java:101)
	at sun.reflect.GeneratedMethodAccessor214.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
	at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:564)
	at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:213)
	at org.testng.internal.Invoker.invokeMethod(Invoker.java:786)
	at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
	at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
	at org.testng.TestRunner.privateRun(TestRunner.java:767)
	at org.testng.TestRunner.run(TestRunner.java:617)
	at org.testng.SuiteRunner.runTest(SuiteRunner.java:348)
	at org.testng.SuiteRunner.access$000(SuiteRunner.java:38)
	at org.testng.SuiteRunner$SuiteWorker.run(SuiteRunner.java:382)
	at org.testng.internal.thread.ThreadUtil$2.call(ThreadUtil.java:64)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)