I keep getting this exception under small load.
com.datastax.driver.core.exceptions.NoHostAvailableException: All host(s) tried for query failed (tried: /127.0.0.1:9042 (com.datastax.driver.core.exceptions.BusyPoolException: [/127.0.0.1] Pool is busy (no available connection and the queue has reached its max size 256)))
is there an option to check number of open connections ?