protected void loadTableAndKillRS(HBaseTestingUtil util) throws Exception {
    // killing the RS with hbase:meta can result into failed puts until we solve
    // IO fencing
    int rsToKill1 = util.getHBaseCluster().getServerWithMeta() == 0 ? 1 : 0;

    // Takes about 20 secs to run the full loading, kill around the middle
    Thread killer = killARegionServer(util, 5000, rsToKill1);
    Result[] res;
    int initialCount;
    try (Connection conn = ConnectionFactory.createConnection(CONF1)) {
      try (Table table = conn.getTable(tableName)) {
        LOG.info("Start loading table");
        initialCount = UTIL1.loadTable(table, famName);
        LOG.info("Done loading table");
        killer.join(5000);
        LOG.info("Done waiting for threads");

        while (true) {
          try (ResultScanner scanner = table.getScanner(new Scan())) {
            res = scanner.next(initialCount);
            break;
          } catch (UnknownScannerException ex) {
            LOG.info("Cluster wasn't ready yet, restarting scanner");
          }
        }
      }
    }
    // Test we actually have all the rows, we may miss some because we
    // don't have IO fencing.
    if (res.length != initialCount) {
      LOG.warn("We lost some rows on the master cluster!");
      // We don't really expect the other cluster to have more rows
      initialCount = res.length;
    }

    int lastCount = 0;
    final long start = EnvironmentEdgeManager.currentTime();
    int i = 0;
    try (Connection conn = ConnectionFactory.createConnection(CONF2)) {
      try (Table table = conn.getTable(tableName)) {
        while (true) {
          if (i == NB_RETRIES - 1) {
            fail("Waited too much time for queueFailover replication. " + "Waited "
              + (EnvironmentEdgeManager.currentTime() - start) + "ms.");
          }
          Result[] res2;
          try (ResultScanner scanner = table.getScanner(new Scan())) {
            res2 = scanner.next(initialCount * 2);
          }
          if (res2.length < initialCount) {
            if (lastCount < res2.length) {
              i--; // Don't increment timeout if we make progress
            } else {
              i++;
            }
            lastCount = res2.length;
            LOG.info(
              "Only got " + lastCount + " rows instead of " + initialCount + " current i=" + i);
            Thread.sleep(SLEEP_TIME * 2);
          } else {
            break;
          }
        }
      }
    }
  }
Load up 1 tables over 2 region servers and kill a source during the upload. The failover
happens internally. WARNING this test sometimes fails because of HBASE-3515
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/TestReplicationKillRS.java