presto-cassandra/src/main/java/io/prestosql/plugin/cassandra/BackoffRetryPolicy.java/BackoffRetryPolicy/onRequestError
class BackoffRetryPolicy:    @Override
    public RetryDecision onRequestError(Statement statement, ConsistencyLevel cl, DriverException e, int nbRetry)
    {
        return RetryDecision.tryNextHost(cl);
    }