DistributionEventDistributeDistributionTriggerTest fails sporadically

git@github.com:apache/sling-org-apache-sling-distribution-core.git

Tests run: 4, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1 sec <<< FAILURE! - in org.apache.sling.distribution.trigger.impl.DistributionEventDistributeDistributionTriggerTest
testDistributionLoop(org.apache.sling.distribution.trigger.impl.DistributionEventDistributeDistributionTriggerTest)  Time elapsed: 0.997 sec  <<< FAILURE!
java.lang.AssertionError: expected:<1> but was:<0>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:834)
	at org.junit.Assert.assertEquals(Assert.java:645)
	at org.junit.Assert.assertEquals(Assert.java:631)
	at org.apache.sling.distribution.trigger.impl.DistributionEventDistributeDistributionTriggerTest.testDistributionLoop(DistributionEventDistributeDistributionTriggerTest.java:133)