private void verifyPutAllMap(Map map) {
    Collection theEntries = map.entrySet();
    for (Object theEntry : theEntries) {
      Map.Entry mapEntry = (Map.Entry) theEntry;
      Object key = mapEntry.getKey();
      if (mapEntry.getValue() == null || key == null) {
        throw new NullPointerException("Any key or value in putAll should not be null");
      }
      if (!MemoryThresholds.isLowMemoryExceptionDisabled()) {
        checkIfAboveThreshold(key);
      }
      // Threshold check should not be performed again
    }
  }
Return false if it will never store entry ekys and values locally; otherwise return true.
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java