Question - What is a Zookeeper? What are the benefits of using a zookeeper?
Answer -
Hadoop’s most remarkable technique for addressing big data challenges is its capability to divide and conquer with Zookeeper. After the problem has been divided, the conquering relies on employing distributed and parallel processing methods across the Hadoop cluster.
The interactive tools cannot provide the insights or timeliness needed to make business judgments for big data problems. In those cases, you need to build distributed applications to solve those big data problems. Zookeeper is Hadoop’s way of coordinating all the elements of these distributed applications.
Zookeeper as technology is simple, but its features are powerful. Arguably, it would be difficult, if not impossible, to create resilient, fault-tolerant distributed Hadoop applications without it.
Benefits of using a Zookeeper are:
- Simple distributed coordination process: The coordination process among all nodes in Zookeeper is straightforward.
- Synchronization: Mutual exclusion and co-operation among server processes.
- Ordered Messages: Zookeeper tracks with a number by denoting its order with the stamping of each update; with the help of all this, messages are ordered here.
- Serialization: Encode the data according to specific rules. Ensure your application runs consistently.
- Reliability: The zookeeper is very reliable. In case of an update, it keeps all the data until forwarded.
- Atomicity: Data transfer either succeeds or fails, but no transaction is partial.