title: size of HBase tables
body: <p>I have used the command</p>
  
  <p><code> hdfs dfs -du -h  /hbase/data/default/ </code></p>
  
  <p>as indicated here:
  <a href="https://stackoverflow.com/questions/28729257/how-do-i-determine-the-size-of-my-hbase-tables-is-there-any-command-to-do-so">How do I determine the size of my HBase Tables ?. Is there any command to do so?</a>
  to view the sizes of the hbase tables. 
  However, there are 2 numbers appearing in the output as in the following example:</p>
  
  <p><code>...
  2.7 M    8.1 M    /hbase/data/default/rTblCM_opt
  9.4 M    28.2 M   /hbase/data/default/rTblCM_std
  </code></p>
  
  <p>What is the meaning of these numbers?</p>
  
  <p>Thanks</p>