Congrats Onur! --Vahid
From: Ismael Juma <ism...@juma.me.uk> To: dev@kafka.apache.org Cc: "us...@kafka.apache.org" <us...@kafka.apache.org> Date: 11/06/2017 10:13 AM Subject: Re: [ANNOUNCE] New committer: Onur Karaman Sent by: isma...@gmail.com Congratulations Onur! Ismael On Mon, Nov 6, 2017 at 5:24 PM, Jun Rao <j...@confluent.io> wrote: > Hi, everyone, > > The PMC of Apache Kafka is pleased to announce a new Kafka committer Onur > Karaman. > > Onur's most significant work is the improvement of Kafka controller, which > is the brain of a Kafka cluster. Over time, we have accumulated quite a few > correctness and performance issues in the controller. There have been > attempts to fix controller issues in isolation, which would make the code > base more complicated without a clear path of solving all problems. Onur is > the one who took a holistic approach, by first documenting all known > issues, writing down a new design, coming up with a plan to deliver the > changes in phases and executing on it. At this point, Onur has completed > the two most important phases: making the controller single threaded and > changing the controller to use the async ZK api. The former fixed multiple > deadlocks and race conditions. The latter significantly improved the > performance when there are many partitions. Experimental results show that > Onur's work reduced the controlled shutdown time by a factor of 100 times > and the controller failover time by a factor of 3 times. > > Congratulations, Onur! > > Thanks, > > Jun (on behalf of the Apache Kafka PMC) >
