title: how many rows in a column family in Cassandra can effect performance?
body: <p>I work in a massive weblog processing project with <code>apache Cassandra</code> , but i wonder that if i have too many rows in a columnfamily . Will This make my query slower ?? </p>
  
  <p>in my data , we have about 100 billion rows log / per day</p>
  
  <p>if i partion them to many column family (as a day pattern like 20120627) is better ideal ???</p>
  
  <p>Any one can give me a suggestion to modeling this data?? </p>
  
  <p>i intend to create only column family like that: </p>
  
  <pre><code>CREATE TABLE data (
    KEY text PRIMARY KEY
  ) WITH
    comment='log' AND
    comparator=text 
  </code></pre>
  
  <p>i want to process data at chunk of time stamp (ex process: 10:20 --> 10:30 data)</p>