@Override
    public TableBuilder getTableBuilder(TableName tableName, ExecutorService pool) {
      throw new UnsupportedOperationException();
    }
Connection class to use in {@link #testNonSuccessiveSplitsAreNotMerged}. This class returns
mocked {@link Table}, {@link RegionLocator}, {@link RegionSizeCalculator}, and {@link Admin}.
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableInputFormatBase.java