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Elasticsearch Test

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Type

Software Skills

Time

5 minutes

Level

Medium

Questions

5

About the Test

This Elasticsearch test assesses candidates’ technical skills using Elasticsearch and their ability to deploy, configure, and integrate with other relevant ELK stack tools.

Elasticsearch is a distributed, open-source search and analytics engine that is designed to store, search, and analyze large volumes of data quickly and in near real-time. It is built on top of the Apache Lucene search library and uses a document-oriented data model, meaning it stores data as documents rather than as rows in a table.

Elasticsearch is highly scalable, flexible, and easy to use, making it a popular choice for a wide range of applications, including search, analytics, logging, and more.

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Skills Measured

  • Configuration and clustering
  • Indexing and mapping data
  • APIs and extracting details through queries
  • Integration with other common open-source tools

Roles

  • Software Engineer
  • Data Engineer
  • Data Analyst
  • ELK Engineer
  • ELK Administrator

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1

Configuration and clustering

Configuration and clustering in Elasticsearch refers to the process of setting up and managing an Elasticsearch cluster, which is a group of nodes (servers) that work together to store, search, and analyze data. Configuration involves tasks such as setting up the nodes, assigning roles (e.g. data, master, client), and configuring the index and shard settings. Clustering involves tasks such as adding and removing nodes, balancing the load across the cluster, and monitoring the health and performance of the cluster.

2

Indexing and mapping data

Indexing and mapping data in Elasticsearch refers to the process of storing and organizing data in Elasticsearch in a way that makes it searchable and easy to analyze. Indexing involves creating an index, which is a logical container for data, and adding documents (data records) to the index. Mapping involves defining the structure of the documents in the index, including the data types and field names.

3

Integration with other common open-source tools

Integration with other common open-source tools in Elasticsearch refers to the ability of Elasticsearch to work with other open-source tools and technologies. For example, Elasticsearch can be integrated with the Logstash data processing pipeline to collect, parse, and index log data, or with the Kibana visualization tool to create interactive dashboards and charts. Elasticsearch can also be integrated with a variety of other tools and technologies, including database systems, messaging systems, and more.

4

APIs and extracting details through queries

APIs in Elasticsearch refer to the application programming interfaces (APIs) that are used to interact with Elasticsearch. Elasticsearch has a simple, RESTful API that allows developers to create, update, delete, and search for data in Elasticsearch using HTTP requests. Extracting details through queries in Elasticsearch refers to the process of retrieving data from Elasticsearch using search queries. Elasticsearch has a powerful query language that allows users to specify the data they want to retrieve and the search criteria they want to use.

The test is created by a subject-matter expert

Testlify’s skill tests are designed by experienced SMEs (subject matter experts). We evaluate these experts based on specific metrics such as expertise, capability, and their market reputation. Prior to being published, each skill test is peer-reviewed by other experts and then calibrated based on insights derived from a significant number of test-takers who are well-versed in that skill area. Our inherent feedback systems and built-in algorithms enable our SMEs to refine our tests continually.

View sample score cards

Top five hard skills interview questions for Elasticsearch

1. What is Elasticsearch and how is it different from traditional relational databases?
Why this Matters?

This question assesses the candidate’s understanding of Elasticsearch and its role in modern web applications.

What to listen for?

Look for a clear and concise explanation of Elasticsearch, highlighting its advantages over traditional databases such as scalability, speed, and search functionality.

2. How do you configure an Elasticsearch cluster for high availability and reliability?
Why this Matters?

This question evaluates the candidate’s knowledge of Elasticsearch architecture and best practices for configuring a production-ready cluster.

What to listen for?

Listen for the candidate to describe key concepts such as node allocation, shard replication, and load balancing, as well as how to monitor the cluster for issues and errors.

3. What is a query DSL in Elasticsearch, and how does it work?
Why this Matters?

This question assesses the candidate’s proficiency in using Elasticsearch’s query domain-specific language (DSL) to search and filter data.

What to listen for?

Look for the candidate to explain how to construct a query using the Elasticsearch DSL, including filters, aggregations, and other advanced features such as fuzzy search.

4. How would you optimize Elasticsearch performance for a large-scale application?
Why this Matters?

This question evaluates the candidate’s ability to optimize Elasticsearch for performance and scalability in a real-world scenario.

What to listen for?

Listen for the candidate to describe techniques such as index optimization, query caching, and shard sizing, as well as how to tune Elasticsearch for specific use cases such as e-commerce or log analysis.

5. Can you describe a complex Elasticsearch integration project you have worked on in the past?
Why this Matters?

This question assesses the candidate’s experience and ability to work on complex Elasticsearch projects.

What to listen for?

Look for the candidate to describe the scope of the project, their role in it, and the technical challenges they faced. Listen for them to describe how they resolved issues related to data modeling, indexing, search, and performance.

Frequently Asked Questions for Elasticsearch

An Elasticsearch assessment assesses candidates’ ability to identify any potential issues or areas for improvement in an Elasticsearch cluster or implementation and to provide recommendations for addressing those issues.

An Elasticsearch assessment can be used by recruiters and hiring managers to evaluate candidates’ experience with Elasticsearch and their understanding of its capabilities and limitations.

  • Software Engineer
  • Data Engineer
  • Data Analyst
  • ELK Engineer
  • ELK Administrator

  • Configuration and clustering
  • Indexing and mapping data
  • APIs and extracting details through queries
  • Integration with other common open-source tools

Elasticsearch is an important tool for organizations that need to store, search, and analyze large volumes of data quickly and efficiently. It is particularly useful for applications that require real-time search and analytics, such as e-commerce, log analytics, and healthcare.

Frequently Asked Questions (FAQs)

Want to know more about Testlify? Here are answers to the most commonly asked questions about our company.

These are ready-made tests, existing in our test library, created by subject matter experts. We have 200+ such skills tests covering various skills from programming skills to DevOps, including Aptitude and Personality testing.

You can go to the ‘Test Library’ tab and search for tests from the Job Role or Test Type drop-down menu.

Currently, we do not offer any sample tests. However, when you select a test, there would be a few practice questions before the start of the actual test, which would give you a fair idea of how the entire test would look.

Our tests typically take between 25-30 minutes to complete.

In case you need to test for a unique skill-set or specialized experience, you can add your own questions and customize the test to suit your requirements.

We’ve put a lot of effort into ensuring a conducive test environment. A stable internet connection, an internet browser with cookies and Java-Script enabled is all that is required!
However, for a smooth test-taking process, we recommend the following browsers:
– Google Chrome
– Internet Expl
– Mozilla Firefox

Yes, our tests are compatible with almost all modern mobile devices (including tablets) that have a webcam installed.

Yes, our tests are EEOC (Equal Employment Opportunity Commission) compliant and are whetted by subject matter experts, thus having high reliability (test consistency) and validity (accuracy of the test).

Yes! We integrate with popular recruiting tools such as Greenhouse, Lever, GoodTime, and many more.

We are GDPR compliant and take data security very seriously. You have complete ownership of your data. All your data is safe and secure, and we do not expose it to any third party.

Testlify is an excellent tool for assessing candidates’ soft and hard skills. The founder and customer success team were helpful during onboarding and demonstrated a commitment to continuously improving the platform.
Fabrizio Parzanese
Founder, ExpHire
Testlify’s integration with ATS makes it simple to incorporate into recruitment processes. Customizable test suites, open-ended questions, and qualifying questions streamline the candidate assessment process and improve collaboration with hiring managers. 
Benjamin Marsili
 Founder, White
A must-have tool in any HR department! Well thought out a comprehensive platform that shortens the candidate selection time significantly.
Meir Shachar
CEO at PowerLinx
With Testlify, we were able to optimize our initial screening process by upwards of 75%.
We saved a tremendous amount
Gary E. Benedik
President, Arch Advisory Group
Testlify has revolutionized our hiring process by streamlining the screening stage. It has saved us countless hours by allowing us to shortlist the right candidates.
Vipin Kashyap
CEO at Sookshum Labs

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