Can I make a bolt to do a batch job?

[이승진]

Hi all,
 
Assume that there are one spout and one bolt.
 
and spout emits a single log, and bolt stores it into DB for example.
 
and they are connected using shuffle grouping.
 
It comes to my mind that if a bolt can wait for 10 tuples to come from spout, 
and request batch insert to DB, it might be beneficial performancewise.
 
Is there any way to make a bolt gather tuples until certain size and do it's 
job?