Flaky test: testValidateNotFailZkNameSpace

testValidateNotFailZkNameSpace FAILED
    org.I0Itec.zkclient.exception.ZkNodeExistsException: org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /test
        at org.I0Itec.zkclient.exception.ZkException.create(ZkException.java:55)
        at org.I0Itec.zkclient.ZkClient.retryUntilConnected(ZkClient.java:1000)
        at org.I0Itec.zkclient.ZkClient.create(ZkClient.java:527)
        at org.I0Itec.zkclient.ZkClient.createPersistent(ZkClient.java:293)
        at org.I0Itec.zkclient.ZkClient.createPersistent(ZkClient.java:270)
        at org.I0Itec.zkclient.ZkClient.createPersistent(ZkClient.java:250)
        at org.apache.samza.zk.TestZkNamespace.testDoNotFailIfNameSpacePresent(TestZkNamespace.java:95)
        at org.apache.samza.zk.TestZkNamespace.testValidateNotFailZkNameSpace(TestZkNamespace.java:148)
        Caused by:
        org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /test
            at org.apache.zookeeper.KeeperException.create(KeeperException.java:119)
            at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
            at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:783)
            at org.I0Itec.zkclient.ZkConnection.create(ZkConnection.java:99)
            at org.I0Itec.zkclient.ZkClient$3.call(ZkClient.java:530)
            at org.I0Itec.zkclient.ZkClient$3.call(ZkClient.java:527)
            at org.I0Itec.zkclient.ZkClient.retryUntilConnected(ZkClient.java:990)
            ... 6 more