Re: Python and subscribing to topic based on key

2020-01-02 Thread Boyang Chen
Hey George, there is no support for server side filtering based on key at the moment, as it may significantly impact broker side performance. On Thu, Jan 2, 2020 at 12:26 PM George wrote: > Hi all > > is it possible to subscribe to a topic based on a specified key... without > specifying the ho

High CPU Usage on Brokers

2020-01-02 Thread Navneeth Krishnan
Hi All, We have a kafka cluster with 12 nodes and we are pretty much seeing 90% cpu usage on all the nodes. Here is all the information. Need some help on figuring out what the problem is and how to overcome this issue. *Cluster:* Kafka version: 2.3.0 Number of brokers in cluster: 12 Node type: 4

Re: complicated logic for tombstone records

2020-01-02 Thread Alex Brekken
Hi Jan, unfortunately there is no easy or automatic way to do this. Publishing null values directly to the changelog topics will remove them from the topic, but it won't remove the corresponding row from the RocksDB state store. (though deleting data programmatically from a state-store WILL also r

Re: complicated logic for tombstone records

2020-01-02 Thread Boyang Chen
Hey Jan, although I believe your case is much more complicated, but would time based retention work for you at all? If yes, time window store is like the best option. If no, streams has no out-of-box solution for invalidating the aggregation record. It seems at least we could provide an API to in

complicated logic for tombstone records

2020-01-02 Thread Jan Bols
Hi, I have a rather complicated kafka streams application involving multiple joins, aggregates, maps etc. At a certain point, parts of the data needs to be removed throughout the entire streams topology, both in the topics, the changelogs and the rocksdb state stores. Managing this requires a lot

Python and subscribing to topic based on key

2020-01-02 Thread George
Hi all is it possible to subscribe to a topic based on a specified key... without specifying the hosting partition. I know I can simply subscribe to the topic and filter the data as received looking for relevant key, but I'd prefer to have this filter done on the broker, reducing the consumer wor

Question On KIP-500

2020-01-02 Thread M. Manna
Hello, Greetings of the New Year to everybody. Sorry for reviving this randomly, as I didn't have the original thread anymore. I was reading through this KIP and trying to following the current vs proposed diagrams. Once again, apologies for making mistakes in understanding this. Are we replacin