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Elasticsearch Interview Questions and Answers

Know the top Elasticsearch interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Total 61 questions Elasticsearch Interview Questions and Answers

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Know the top Elasticsearch interview questions and answers for freshers and experienced candidates to prepare for job interviews.

Elasticsearch Interview Questions and Answers

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Freshers / Beginner level questions & answers

Ques 11

What is Elasticsearch?

Elasticsearch is a distributed search and analytics engine built on top of Apache Lucene. It provides a scalable and real-time search solution.

Example:

GET /index/_search?q=query
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Ques 12

What is a 'Node' in Elasticsearch?

A node is a single instance of Elasticsearch running on a machine. It is part of a cluster and stores data and participates in the indexing and search capabilities of Elasticsearch.

Example:

GET /_cat/nodes?v
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Ques 13

What is the role of the 'Cat' API in Elasticsearch?

The 'Cat' API in Elasticsearch provides concise and human-readable information about the cluster, nodes, indices, and other components. It is useful for monitoring and debugging.

Example:

GET /_cat/indices?v
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Ques 14

What is the purpose of the 'Cluster Health' API in Elasticsearch?

The 'Cluster Health' API provides information about the overall health of the Elasticsearch cluster, including the status of nodes, indices, and other vital statistics.

Example:

GET /_cluster/health
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Ques 15

How can you limit the number of results in an Elasticsearch query?

You can use the 'size' parameter in your query to limit the number of results returned. For example, 'size': 10 will return only 10 documents.

Example:

GET /my_index/_search
{
  "query": {
    "match_all": {}
  },
  "size": 10
}
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