serverSelector.addServer(queryableDruidServer1);
QueryableDruidServer queryableDruidServer2 = new QueryableDruidServer(
new DruidServer("test1", "localhost", 0, "historical", DruidServer.DEFAULT_TIER, 0),
client2
);
serverSelector.addServer(queryableDruidServer2);
TimeBoundaryQuery query = Druids.newTimeBoundaryQueryBuilder().dataSource("test").build();
HashMap<String,List> context = new HashMap<String, List>();
Sequence s1 = client1.run(query, context);
Assert.assertEquals(1, client1.getNumOpenConnections());