Topic messages with partitions=1 stored on multiple brokers

[Suchi Amalapurapu]

My current setup has 2 brokers, multiple topics, each topic with 1
partition, kafka 0.7.1
Some topics are logged onto multiple brokers inspite of partitions set to
1. Kafka 0.7.1 does not have replication turned on.
Why are the messages being logged onto multiple brokers when the number of
partitions is set to 1?
I have a consumer with parallelism set to 1 and its missing some of these
messages.
Suchi