__consumer_offsets compaction settings / metadata performance

2019-09-13 Thread Aminouvic
Hi all, Currently with default settings min.cleanable.dirty.ratio/log.cleaner.min.cleanable.ratio (0.5) __consumer_offsets partition size grows up to 80Mb and this seems to slow down metadata related operations (notably commits / join group). What are the normal/expected partition avg size for

guidelines for replacing a lost Kafka Broker

2019-09-13 Thread Alok Dwivedi
Hi All Can someone please advise what is the recommended practice for replacing a lost broker in a Kafka cluster. Lets consider this sequence of events 1. 3 node cluster say with 1 topic of 3 partitions and RF of 2. 2. That gives 2 partitions on each Broker (B1,B2,B3) 3. Lets say we los

Re: guidelines for replacing a lost Kafka Broker

2019-09-13 Thread M. Manna
Not sure what you mean by 1 topic with 3 partition and replication-factor = 2. You may need to revisit the idea of partitions and replication factor from docs. Thanks, On Fri, 13 Sep 2019 at 11:51, Alok Dwivedi wrote: > Hi All > Can someone please advise what is the recommended practice for rep

Re: guidelines for replacing a lost Kafka Broker

2019-09-13 Thread saurav suman
Hi, When the old data is lost and another broker is added to the cluster then it is a new fresh broker with no data. You can reassign the partitions of the topics using kafka-reassign-partitions.sh script. Please check the below links for more details. https://blog.imaginea.com/how-to-rebalance-

Re: guidelines for replacing a lost Kafka Broker

2019-09-13 Thread Svante Karlsson
Just bring a new broker up and give it the id of the lost one. It will sync itself /svante Den fre 13 sep. 2019 kl 13:51 skrev saurav suman : > Hi, > > When the old data is lost and another broker is added to the cluster then > it is a new fresh broker with no data. You can reassign the partitio

Requirements

2019-09-13 Thread Peter Menapace
Hi all, I have a small small question. In my company we would like to use Apache Kafka with KSQL. And my small question is: which hardware requirements do you have to run Kafka and KSQL in small and big environments? Best regards, Peter Mit freundlichen Grüßen, Peter Menapace Senior IT Archit

Re: Requirements

2019-09-13 Thread Hans Jespersen
Gwen Shapira published a great whitepaper with Reference Architectures for all Kafka and Confluent components in big and small environements and for bare metal, VMs, and all 3 major public clouds. https://www.confluent.io/resources/apache-kafka-confluent-enterprise-reference-architecture/ On Fri

[VOTE] 2.3.1 RC0

2019-09-13 Thread David Arthur
Hello Kafka users, developers and client-developers, This is the first candidate for release of Apache Kafka 2.3.1 which includes many bug fixes for Apache Kafka 2.3. Release notes for the 2.3.1 release: https://home.apache.org/~davidarthur/kafka-2.3.1-rc0/RELEASE_NOTES.html *** Please downl