public static void doPutAll(String regionName, int numPuts, int size) {
    Region<Long, String> r = cache.getRegion(SEPARATOR + regionName);
    for (long i = 0; i < numPuts; i++) {
      Map<Long, String> putAllMap = new HashMap<>();
      for (long j = 0; j < size; j++) {
        putAllMap.put((size * i) + j, "Value_" + i);
      }
      r.putAll(putAllMap, "putAllCallback");
      putAllMap.clear();
    }
  }
Returns a Map that contains the count for number of cache server and number of Receivers.
geode-wan/src/distributedTest/java/org/apache/geode/internal/cache/wan/WANTestBase.java