public static List<Throwable> metaCachePreservingExceptions() {
    return Arrays.asList(new RegionOpeningException(" "),
      new RegionTooBusyException("Some old message"), new RpcThrottlingException(" "),
      new MultiActionResultTooLarge(" "), new RetryImmediatelyException(" "),
      new CallQueueTooBigException());
  }
Test that our cleanOverlappingRegions doesn't incorrectly remove regions from cache. Originally
encountered when using floorEntry rather than lowerEntry.
hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestMetaCache.java