// publish stats
fillStatMap("200", "1000");
assertTrue(statsPublisher.publishStat("file_00000_a", stats));
fillStatMap("300", "2000");
assertTrue(statsPublisher.publishStat("file_00000_b", stats));
fillStatMap("400", "3000");
assertTrue(statsPublisher.publishStat("file_00001_a", stats));
fillStatMap("500", "4000");
assertTrue(statsPublisher.publishStat("file_00001_b", stats));