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MuleESB / Apache Kafka Interview questions

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Mention some of the Apache Kafka terminologies.
  • Producer is an application that sends message/data to the Kafka.
  • Consumer is also an application that receives data from Kakfa,
  • Broker is nothing but the KAFKA Server,
  • Cluster, group of computer nodes sharing workload,
  • Topic, Kafka stream
  • Partitions, a portion of Topics
  • Offset, an unique id for a message within a partition,
  • and Consumer Groups, group of consumers acting as a single logical unit.
What is the Global Unique identifier of a Kafka Message?

Topic Name, Partition Number and Offset id identifies a message.

What is Apache Kafka?

Apache Kafka is a publish-subscribe open source message broker application.

It is an open-source stream-processing software platform developed by the Apache Software Foundation, written in Scala and Java. It is used for building real-time data pipelines and streaming apps. It is horizontally scalable, fault-tolerant and fast.

Explain the role of the ZooKeeper in Kafka.

Zookeeper builds coordination between different nodes in a cluster. Apache Kafka uses Zookeeper to recover from previously committed offset if any node fails because it works as periodically commit offset.

What is Apache ZooKeeper?

Apache ZooKeeper is an open-source server which enables highly reliable distributed coordination.

ZooKeeper acts as a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.

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