Which is the best free data warehouse products : <p>I am developing a system which constains a lot of olap work. According to my research, column based data warehouse is the best choice. But I am puzzled to choose a good data warehouse product. </p>

<ol>
<li><p>All the data warehouse comparison article I see is befor 2012,and there seems little article about it. Is data warehouse out-of-date? Hadoop HBase is better?</p></li>
<li><p>As far as I know, InfiniDB is a high performance open source data warehouse product, but it has not been maintained for 2 years <a href="https://github.com/infinidb/infinidb" rel="nofollow">https://github.com/infinidb/infinidb</a>. And there is little document about InfiniDB . Has InfiniDB been abundanted by developers ?</p></li>
<li><p>Which is the best data warehouse product by now?</p></li>
<li><p>How do I incrementally move my Business data stored in the Mysql database to data warehouse ?</p></li>
</ol>

<p>Thank you for your answer!</p>
