logger.info("--> running cluster health");
ClusterHealthResponse clusterHealth = client1.admin().cluster().prepareHealth().setWaitForGreenStatus().setWaitForActiveShards(6).execute().actionGet();
logger.info("--> done cluster health, status " + clusterHealth.status());
assertThat(clusterHealth.timedOut(), equalTo(false));
assertThat(clusterHealth.status(), equalTo(ClusterHealthStatus.GREEN));
assertThat(clusterHealth.indices().get("test").activePrimaryShards(), equalTo(2));
assertThat(clusterHealth.indices().get("test").numberOfReplicas(), equalTo(2));
assertThat(clusterHealth.indices().get("test").activeShards(), equalTo(6));
logger.info("--> add two more nodes");
startNode("node4");