+1 - We do a lot of this with Pig - joining over several column families. Pig
makes it just work. I think Hive does something similar. Unless you really
need that much control over your process, I would really use one of those two.
On Jul 15, 2011, at 5:28 PM, Jonathan Ellis wrote:
> The eas
The easy answer is "use something like Pig or Hive that does these
joins for you under the hood."
Not actually sure what the hard answer is. :)
On Fri, Jul 15, 2011 at 1:34 AM, Markus Mock wrote:
> Hello,
> with org.apache.cassandra.hadoop.ConfigHelper.setInputColumnFamily I can set
> up the map
Hello,
with org.apache.cassandra.hadoop.ConfigHelper.setInputColumnFamily I can set
up the map phase to read from one column family. Is it possible to have
multiple mapper classes each mapping over their own column family so that
data from multiple column families can be "joined" in the reduce pha
