ScatteredSplitAndMergeTest random failures

http://ci.infinispan.org/job/Infinispan/job/master/214/testReport/junit/org.infinispan.partitionhandling/ScatteredSplitAndMergeTest/testSplitAndMerge5_SCATTERED_SYNC_/

java.lang.AssertionError: expected [null] but found [v0]
at org.infinispan.partitionhandling.ScatteredSplitAndMergeTest.testSplitAndMerge(ScatteredSplitAndMergeTest.java:80)
at org.infinispan.partitionhandling.ScatteredSplitAndMergeTest.testSplitAndMerge5(ScatteredSplitAndMergeTest.java:51)
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 20 stack frames