Congratulations Onur !
On Mon, Nov 6, 2017 at 7:01 PM, Matthias J. Sax <matth...@confluent.io> wrote: > Congrats!!! > > > On 11/6/17 7:56 PM, Vahid S Hashemian wrote: >> 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) >>> >> >> >> >> >> >
