Quite a few people have been asking the same question. I created this wiki (https://cwiki.apache.org/confluence/display/KAFKA/Changes+in+Kafka+0.8
document the significant changes in 0.8.
The replication design in 0.8 leveraged some ideas in the paper that you
mentioned, but is not the same. The key difference is that in 0.8, we
tolerate f-1 failures with f replicas. In contrast, typical Paxos-based
algorithms only tolerate f failures with 2*f + 1 replicas.
In terms of release schedule, we have seen some blocker issues when testing
0.8 on some production data at LinkedIn. Those blockers are being tracked
We plan to release a beta version once those blockers are resolved,
hopefully in the next few weeks.
On Sat, Jan 19, 2013 at 4:38 PM, Stan Rosenberg <[EMAIL PROTECTED]>wrote: