waitForBlockLocations(cluster, nn2, TEST_FILE, 3);
// Trigger immediate heartbeats and block reports so
// that the active "trusts" all of the DNs
cluster.triggerHeartbeats();
cluster.triggerBlockReports();
// Change replication
LOG.info("Changing replication to 1");
fs.setReplication(TEST_FILE_PATH, (short)1);
waitForBlockLocations(cluster, nn1, TEST_FILE, 1);