private void setupMockStartKeys(RegionLocator table) throws IOException {
    byte[][] mockKeys = new byte[][] { HConstants.EMPTY_BYTE_ARRAY, Bytes.toBytes("aaa"),
      Bytes.toBytes("ggg"), Bytes.toBytes("zzz") };
    Mockito.doReturn(mockKeys).when(table).getStartKeys();
  }
@return a map from column family names to compression algorithms for testing column family
        compression. Column family names have special characters
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestHFileOutputFormat2.java