Investigate repreparing errors

[mpenick]

INFO client-0 - STDOUT: 20:15:49.108 [cluster1-nio-worker-10] INFO c.d.driver.core.RequestHandler - Query 'SELECT * from testdb_2c5ad08f.soil_meta WHERE row_key=? AND period1=? AND period0=? AND time_range=? AND level1=? AND level0=? AND level_type=? AND parameter=? AND param_table_ver=?;' on keyspace 'null' is not prepared on localhost/127.0.0.1:9042, preparing before retrying executing. Seeing this message a few times is fine, but seeing it a lot may be source of performance problems

It seems like there's some interaction with the cql-proxy that's causing excessive reprepares. This needs to be reproduced and fixed.