Writing to Kafka

Hi,

I started using kafka with Samza. I’m trying to run a test that is supposed to create messages and write to a kafka topic.
In my test I start writing a small amount of messages and it should grow up to 33200/sec.

1. With this amount of messages can one broker handle the messages or should I use more than one?
2. Using more than one broker, the producer should have a list with brokers or just point to one and the messages sent to a different broker?
3. I have a java producer that just creates numbers and sends them to kafka, can kafka handle many producers writing to the same topic at once?

Thanks,