Fetch Request Purgatory and Mirrormaker

2015-04-09 Thread Evan Huus
Hey Folks, we're running into an odd issue with mirrormaker and the fetch request purgatory on the brokers. Our setup consists of two six-node clusters (all running 0.8.2.1 on identical hw with the same config). All "normal" producing and consuming happens on cluster A. Mirrormaker has been set up

Re: Upper-bound on number of consumers

2015-04-09 Thread Wes Chow
We run with 1000's of partitions too and that's fine. However you shouldn't expect to be able to run a consumer per user under your model. Each of your consumers would be discarding most of the data they're ingesting. In fact, the would be throwing away 24 times more data than what they proce

Re: Upper-bound on number of consumers

2015-04-09 Thread Todd Palino
1000s of partitions should not be a problem at all. Our largest clusters have over 30k partitions in them without a problem (running on 40 brokers). We've run into some issues when you have more than 4000 partitions (either leader or replica) on a single broker, but that was on older code so there

Number of messages in a kafka topic

2015-04-09 Thread Hafiz Mujadid
Hi Kafka Users! how to check number of messages in a kafka topic using java api? Thanks

Re: [DISCUSS] KIP-14 Tools Standardization

2015-04-09 Thread Steve Miller
FWIW I like the standardization idea but just making the old switches fail seems like it's not the best plan. People wrap this sort of thing for any number of reasons, and breaking all of their stuff all at once is not going to make them happy. And it's not like keeping the old switches workin