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Big Data - Apache Kafka

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Lesson Description


Lession - #456 Kafka Consumer Group


What is a Kafka customer group?

Consumer group is a multi-threaded or multi-machine consumption from Kafka topics.Use the kafka-consumer-groups.sh to change or reset the offset.



How consumer groups are created in Kafka?

You don't explicitly create consumer groups but instead build consumers which generally belongs to consumer group. Regardless of which technology (Spark, Spring, Flink, ...>
you are utilizing, every Kafka Consumer will have a Consumer Group. The consumer group is configurable for every individual consumer.

Kafka Example



bin/kafka-consumer-groups.sh  --list --bootstrap-server localhost:9092

bin/kafka-consumer-groups.sh --describe --group mygroup --bootstrap-server localhost:9092
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To view the groups you have created. This will display all the consumer group names.
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 ./kafka-consumer-groups.sh --describe --zookeeper hostname:potnumber  --describe  --group c



What is Kafka Schema Registry?
Basically, for both Kafka Producers and Kafka Consumers, Schema Registry in Kafka stores Avro Schemas. It offers a RESTful interface for managing Avro schemas.

What is Kafka bootstrap server?
bootstrap. servers is a comma-separated list of host and port pairs that are the addresses of the Kafka brokers in a "bootstrap" Kafka cluster that a Kafka client connects to initially to bootstrap itself.

What is Kafka rebalancing?
A purchaser bunch is a bunch of shoppers that mutually consume messages from one or numerous Kafka points. The head of a gathering is a buyer that is also liable for the segment task in a purchaser bunch. Rebalancing is only that - the cycle to plan each parcel to exactly one shopper.

What is difference between SQS and Kafka?
With SQS, you can offload the administrative burden of operating and scaling a highly available messaging cluster, while paying a low price for only what you use. On the other hand, Kafka is detailed as "Distributed, fault tolerant, high throughput pub-sub messaging system".

What is KSQL in Kafka?
Confluent KSQL is the streaming SQL engine that enables real-time data processing against Apache Kafka®.

Does Kafka use MongoDB?
The official MongoDB Connector for Apache® Kafka® is developed and supported by MongoDB engineers and verified by Confluent.

What is ACL in Kafka?
ACL concepts. Access Control Lists (ACLs>
provide important authorization controls for your enterprise's Apache Kafka® cluster data.

What is a Kafka bus?
Apache Kafka is an open-source distributed event streaming platform used by thousands of companies for high-performance data pipelines, streaming analytics, data integration, and mission-critical applications.

Kafka Consumer with Example Java Application -java Tutorial Kafka and the Doll by Larissa Theule -

Kafka on the Shore Wikipedia-