@Override
      protected void
        setup(Mapper<ImmutableBytesWritable, Result, BytesWritable, BytesWritable>.Context context)
          throws IOException, InterruptedException {
        this.multipleUnevenColumnFamilies = isMultiUnevenColumnFamilies(context.getConfiguration());
      }
A Map Reduce job that verifies that the linked lists generated by {@link Generator} do not have
any holes.
hbase-it/src/test/java/org/apache/hadoop/hbase/test/IntegrationTestBigLinkedList.java