private static int getRegionCountUnchecked(final TableName tableName) {
    try {
      return getRegionCount(tableName);
    } catch (IOException e) {
      throw new RuntimeException(e);
    }
  }
Create a table with 4 regions, having region sizes so as to provoke a split of the largest
region and a merge of an empty region into the largest.
<ul>
<li>total table size: 14</li>
<li>average region size: 3.5</li>
</ul>
hbase-server/src/test/java/org/apache/hadoop/hbase/master/normalizer/TestSimpleRegionNormalizerOnCluster.java