CI failure: RegionWithHDFSOffHeapBasicDUnitTest.testByteArrays

java.lang.AssertionError: Suspicious strings were written to the log during this run.
Fix the strings or use DistributedTestCase.addExpectedException to ignore.
-----------------------------------------------------------------------
Found suspect string in log4j at line 1033

[error 2015/10/18 02:54:02.482 PDT <Event Processor for GatewaySender_AsyncEventQueue_HDFS_QUEUE__testByteArrays_1> tid=0x1919] Could not ping one of the following servers: [latvia(19789)<v257>:61294]
java.lang.InterruptedException
  at com.gemstone.gemfire.distributed.internal.ReplyProcessor21.waitForReplies(ReplyProcessor21.java:686)
  at com.gemstone.gemfire.distributed.internal.ReplyProcessor21.waitForReplies(ReplyProcessor21.java:648)
  at com.gemstone.gemfire.internal.cache.ServerPingMessage.send(ServerPingMessage.java:75)
  at com.gemstone.gemfire.internal.cache.BucketRegion.areSecondariesPingable(BucketRegion.java:2594)
  at com.gemstone.gemfire.cache.hdfs.internal.hoplog.AbstractHoplogOrganizer.pingSecondaries(AbstractHoplogOrganizer.java:373)
  at com.gemstone.gemfire.cache.hdfs.internal.hoplog.HdfsSortedOplogOrganizer.flush(HdfsSortedOplogOrganizer.java:260)
  at com.gemstone.gemfire.cache.hdfs.internal.HDFSEventListener.processEvents(HDFSEventListener.java:115)
  at com.gemstone.gemfire.internal.cache.wan.GatewaySenderEventCallbackDispatcher.dispatchBatch(GatewaySenderEventCallbackDispatcher.java:164)
  at com.gemstone.gemfire.internal.cache.wan.GatewaySenderEventCallbackDispatcher.dispatchBatch(GatewaySenderEventCallbackDispatcher.java:83)
  at com.gemstone.gemfire.internal.cache.wan.AbstractGatewaySenderEventProcessor.processQueue(AbstractGatewaySenderEventProcessor.java:583)
  at com.gemstone.gemfire.internal.cache.wan.AbstractGatewaySenderEventProcessor.run(AbstractGatewaySenderEventProcessor.java:1028)


  at org.junit.Assert.fail(Assert.java:88)
  at dunit.standalone.DUnitLauncher.closeAndCheckForSuspects(DUnitLauncher.java:307)
  at dunit.DistributedTestCase.cleanupAllVms(DistributedTestCase.java:784)
  at dunit.DistributedTestCase.realTearDown(DistributedTestCase.java:759)
  at dunit.DistributedTestCase.tearDown(DistributedTestCase.java:737)
  at junit.framework.TestCase.runBare(TestCase.java:146)
  at junit.framework.TestResult$1.protect(TestResult.java:122)
  at junit.framework.TestResult.runProtected(TestResult.java:142)
  at junit.framework.TestResult.run(TestResult.java:125)
  at junit.framework.TestCase.run(TestCase.java:129)
  at junit.framework.TestSuite.runTest(TestSuite.java:252)
  at junit.framework.TestSuite.run(TestSuite.java:247)
  at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:86)
  at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.runTestClass(JUnitTestClassExecuter.java:86)
  at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecuter.execute(JUnitTestClassExecuter.java:49)
  at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassProcessor.processTestClass(JUnitTestClassProcessor.java:64)
  at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:50)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:497)
  at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
  at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
  at org.gradle.messaging.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:32)
  at org.gradle.messaging.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:93)
  at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
  at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:106)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:497)
  at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:35)
  at org.gradle.messaging.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
  at org.gradle.messaging.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:360)
  at org.gradle.internal.concurrent.DefaultExecutorFactory$StoppableExecutorImpl$1.run(DefaultExecutorFactory.java:64)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  at java.lang.Thread.run(Thread.java:745)