Take the 2-minute tour ×  I have an application that requires
analytics for different level of aggregation, and that's the
OLAP workload. I want to update my database pretty frequently as
well.  e.g., here is what my update looks like (schema looks
like: time, dest, source ip, browser -> visits)
(15:00-1-2-2010, www.stackoverflow.com,, safari) -->  105
(15:00-1-2-2010, www.stackoverflow.com,, firefox) --> 110
(15:00-1-5-2010, www.cnn.com,, firefox) --> 110  And then I want
to ask what is the total visit to www.stackoverflow.com from a
firefox browser last month.  I understand Vertica system can do
this in a relatively cheap way (performance and scalability
wise, but not cost-wise probably). I have two questions here.
1) Is there an open-source product that I can build upon to
solve this problem? In particular, how well does a Mondrian
system work? (scalability, and performance) 2) Is there an HBase
or Hypertable base solution (obviously, a naked HBase/Hypertable
can't do this) for this? -- but if there i