Setting hive.map.aggr false will reduce the chance of terminatePartial() and
merge() being called. Though I don't think it will eliminate the
possibility. If your data is large, it's still possible that a group of data
is processed by multiple reducers and those two methods are needed.
If you need
Hey, my question wasn't very clear. I have a UDAF that I apply per group.
The UDAF does not support terminatePartial() and merge(). So to do this i
run:
set hive.map.aggr=false;
select myUdf(col1, col2) from table group by col3;
Now this seems to work. But are my assumptions correct that this wil
Hive support more than one partitions, have your tried? Maybe you can
create to partitions named as date and user.
Hive 0.7 also support index, maybe you can have a try.
On Sat, Sep 3, 2011 at 1:18 AM, Mark Grover wrote:
> Hello folks,
> I am fairly new to Hive and am wondering if you could shar
