detailed Kafka replication design wiki

[Jun Rao <ju...@gmail.com>]

Hi,

We now have a wiki (
https://cwiki.apache.org/confluence/display/KAFKA/Kafka+Replication) on
detailed Kafka replication design. The design in the wiki made some changes
in the original design. Most of those changes are related to ZK path
layout, ZK watches and how state change commands are initiated and
communicated.

Currently, we have a v2 (
https://cwiki.apache.org/confluence/display/KAFKA/Kafka+replication+detailed+design+V2)
and a v3 (
https://cwiki.apache.org/confluence/display/KAFKA/kafka+Detailed+Replication+Design+V3)
proposal. We feel that v3 offers better end-to-end latency during broker
failover. We'd like to encourage everyone to take a look at those proposals
and comment on them.

Thanks,

Jun