Increasing size of "Batch of prepared statements"

[shahab]

Hi,

I am getting the following warning in the cassandra log:
" BatchStatement.java:258 - Batch of prepared statements for [mydb.mycf] is
of size 3272725, exceeding specified threshold of 5120 by 3267605."

Apparently it relates to the (default) size of prepared  insert statement .
Is there any way to change the default value?

thanks
/Shahab