Congratulations Onur! On Mon, Nov 6, 2017 at 11:15 AM, Edoardo Comar <eco...@uk.ibm.com> wrote:
> Congratulations Onur ! > > -------------------------------------------------- > > Edoardo Comar > > IBM Message Hub > > IBM UK Ltd, Hursley Park, SO21 2JN > > > > From: Jun Rao <j...@confluent.io> > To: "d...@kafka.apache.org" <d...@kafka.apache.org>, > "users@kafka.apache.org" <users@kafka.apache.org> > Date: 06/11/2017 17:24 > Subject: [ANNOUNCE] New committer: Onur Karaman > > > > 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) > > > > Unless stated otherwise above: > IBM United Kingdom Limited - Registered in England and Wales with number > 741598. > Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU >
