[KAFKA-161] Producer using broker list does not load balance requests across multiple partitions on a broker

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.7
• Fix Version/s: 0.7
• Assignee: Neha Narkhede
• Reporter: Neha Narkhede
• Created: 18/Oct/11 21:58
• Updated: 25/Oct/11 04:59
• Resolved: 25/Oct/11 04:59

Description

https://issues.apache.org/jira/browse/KAFKA-129 introduced a bug in the load balancing logic of the Producer using broker.list.
Since the broker.list doesn't specify the number of partitions in total, it should ideally pick a broker randomly, and then send the produce request with partition id -1, so that the EventHandler routes the request to a random partition.
Instead of that, it defaults to 1 partition on each broker and ends up using the Partitioner to pick a partitions amongst the available ones.