Basically, we spread partitions among multiple brokers. If a message is
sent without a key, the producer picks a random partition to balance the
load. If a message has a key, the default partitioner hashes the key to one
of the partitions deterministically. Then, the load may not always be
balanced.

Thanks,

Jun

On Mon, Jan 14, 2013 at 9:35 PM, Jun Guo -X (jungu - CIIC at Cisco) <
[EMAIL PROTECTED]> wrote:
 
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