int numRegionsPerServer = 28;
int numTables = 10;
int numRacks = 4; // all replicas should be on a different rack
Map<ServerName, List<HRegionInfo>> serverMap =
createServerMap(numNodes, numRegions, numRegionsPerServer, replication, numTables);
RackManager rm = new ForTestRackManager(numRacks);
testWithCluster(serverMap, rm, false, true);
}