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Does Kafka consumer need zookeeper?

3 Answers. First of all, zookeeper is needed only for high level consumer. SimpleConsumer does not require zookeeper to work. Here's where zookeeper kicks in: it stores offsets for every group/topic/partition.

Likewise, people ask, does Kafka still need ZooKeeper?

Yes, Zookeeper is must by design for Kafka. Because Zookeeper has the responsibility a kind of managing Kafka cluster. It has list of all Kafka brokers with it. It notifies Kafka, if any broker goes down, or partition goes down or new broker is up or partition is up.

Additionally, what happens if ZooKeeper goes down in Kafka? For example, if you lost the Kafka data in ZooKeeper, the mapping of replicas to Brokers and topic configurations would be lost as well, making your Kafka cluster no longer functional and potentially resulting in total data loss.

Similarly, you may ask, can we run Kafka without ZooKeeper?

As explained by others, Kafka (even in most recent version) will not work without Zookeeper. Kafka uses Zookeeper for the following: Electing a controller. The controller is one of the brokers and is responsible for maintaining the leader/follower relationship for all the partitions.

What is Apache ZooKeeper used for?

Apache ZooKeeper is used for maintaining centralized configuration information, naming, providing distributed synchronization, and providing group services in a simple interface so that we don't have to write it from scratch. Apache Kafka also uses ZooKeeper to manage configuration.

Similar Question and The Answer

What ports Kafka use?

If you are running both on the same machine, you need to open both ports, of corse. kafka default ports: 9092, can be changed on server. zookeeper default ports: 2181 for client connections; 2888 for follower(other zookeeper nodes) connections; 3888 for inter nodes connections;

What is Kafka good for?

Kafka is a distributed streaming platform that is used publish and subscribe to streams of records. Kafka is used for fault tolerant storage. Kafka replicates topic log partitions to multiple servers. Kafka is designed to allow your apps to process records as they occur.

How is Kafka different from MQ?

While IBM MQ or JMS in general is used for traditional messaging, Apache Kafka is used as streaming platform (messaging + distributed storage + processing of data). Both are built for different use cases. You can use Kafka for "traditional messaging", but not use MQ for Kafka-specific scenarios.

What are the major elements of Kafka?

Kafka's main architectural components include Producers, Topics, Consumers, Consumer Groups, Clusters, Brokers, Partitions, Replicas, Leaders, and Followers.

Is Kafka open source?

Apache Kafka is an open-source stream-processing software platform developed by LinkedIn and donated to the Apache Software Foundation, written in Scala and Java. The project aims to provide a unified, high-throughput, low-latency platform for handling real-time data feeds.

Why Kafka is faster?

Kafka relies on the filesystem for the storage and caching. The problem is disks are slower than RAM. This is because the seek-time through a disk is large compared to the time required for actually reading the data. Modern operating systems allocate most of their free memory to disk-caching.

How does Kafka store data?

Kafka wraps compressed messages together Producers sending compressed messages will compress the batch together and send it as the payload of a wrapped message. And as before, the data on disk is exactly the same as what the broker receives from the producer over the network and sends to its consumers.

How many messages can Kafka handle?

Aiven Kafka Premium-8 on UpCloud handled 535,000 messages per second, Azure 400,000, Google 330,000 and Amazon 280,000 messages / second.

Is Kafka push or pull?

With Kafka consumers pull data from brokers. Other systems brokers push data or stream data to consumers. Messaging is usually a pull-based system (SQS, most MOM use pull). A pull-based system has to pull data and then process it, and there is always a pause between the pull and getting the data.

How zookeeper works in Kafka?

Kafka uses Zookeeper to manage service discovery for Kafka Brokers that form the cluster. Zookeeper sends changes of the topology to Kafka, so each node in the cluster knows when a new broker joined, a Broker died, a topic was removed or a topic was added, etc.

What does Kafka store in zookeeper?

Basically, Zookeeper in Kafka stores nodes and topic registries. It is possible to find there all available brokers in Kafka and, more precisely, which Kafka topics are held by each broker, under /brokers/ids and /brokers/topics zNodes, they're stored.

Can Kafka run on Windows?

These are the steps to install Kafka on Windows: Before you start installing Kafka, you need to install Zookeeper. Once it is download, extract the files and copy the kafka folder in C drive. Shift+Right click on the Kafka folder and open it using command prompt or powershell.

How many ZooKeeper nodes does Kafka have?

You need a minimum of 3 zookeepers nodes and 2 Kafka brokers to have a proper fault tolerant cluster. Recommended minimum fault tolerant cluster would be 3 Kafka brokers and 3 zookeeper nodes with replication factor = 3 on all topics.

Does Kafka use raft?

Raft manages a replicated log and can be used with a finite-state-machine (FSM) to manage replicated state machines. So much in the way that Kafka — a log service — can be used as a messaging system enabling its consumers to run arbitrary actions on the logs, so can Raft.

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