static boolean causedByRDE(DiskAccessException diskAccessException) {
    boolean result = false;
    if (diskAccessException != null) {
      Throwable cause = diskAccessException.getCause();
      while (cause != null) {
        if (cause instanceof RegionDestroyedException) {
          result = true;
          break;
        }
        cause = cause.getCause();
      }
    }
    return result;
  }
Return true if dae was caused by a RegionDestroyedException.
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java