Apache Storm Interview Questions and Answers: Fresher & Experience

Apache Storm Interview Questions & Answers

Apache Storm is an open-source computation system based on distributed design and used to process big data analytics in the real-time. Unlike Hadoop batch processing, Apache Storm has the capability to work with almost all programming languages.

Some of the highlighting features that make the Apache Storm extremely popular and the most suitable choice for real-time processing include – Scalable, Flexible, Easy operations, Reliable, Fault-tolerant, and extremely Faster etc.

The popularity of the Apache Storm system is the reason why product offers a plethora of job opportunities and career prospects for the learners. In this blog, we have compiled frequently asked interview questions to assess your knowledge base.

The Apache Storm questions and answers for fresher and experienced are framed by the certified and experienced trainers to help you in leading the interview. Don’t forget to share your experience once you clear the interview and do add some more relevant questions to the comment sections that were asked by you.

** We wish you luck in your next interview**

Apache Storm Interview Questions

Apache Storm Interview Questions and answers

In this blog, we have included most important Apache Storm questions with answers for the freshers and experienced. This does not matter either you have applied for the fresher level or experienced ones. Here, are some of the most relevant questions that are usually asked by the interviewers.

Apache Storm Interview Questions for Fresher

1. What is Apache Storm?

Read: An Introduction and Differences Between YARN and MapReduce

2. What are the major components of Apache Storm system?

Apache Storm Interview questions and answers

Nimbus – This is a job tracker that distributes the code across clusters, computes the code and execute it.
Zookeeper – This is a mediator to communicate with the storm cluster.
Supervisor – It interacts with Nimbus with the help of zookeeper and executes the process as per the Nimbus’s instructions.

3. Name some features that make it the most suitable choice for the real-time processing?

4. Can Apache Storm be used as a proxy server too?

Yes, it can be used as a proxy server with the help of mod-proxy module.

5. Define the components of data stream flow in Apache Storm?

Apache Storm Interview questions and answers

6. How will you define a stream and stream grouping in Apache Storm?

A Stream is a sequence of bounded or unbounded tuples while stream grouping process streams among the bolt tasks.

7. There are how many categories to define the stream grouping in Apache Storm?

Apache Storm Interview questions and answers

8. How are storm apps helpful for the financial services?

Storm apps are helpful to manage the securities fraud, order routing, compliance violation and the cost-effectiveness.

Read: An Introduction to Apache Spark and Spark SQL

9. What is the role of a zookeeper in Apache Storm?

Zookeeper is a mediator to facilitate coordination with clusters. Zookeeper is not involved in message passing, so workload on the zookeeper is very low.

10. Are you familiar with the term ZeroMQ in Apache Storm?

ZeroMQ is used to facilitate task-to-task communications in running storm topologies.

Apache Storm interview questions and answers for Experienced

11. When should you call the clean-up method?

The clean-up method comes in picture when Bolt shuts down and there is an immediate need to clean the running resources in the system.

12. How will you kill a topology in Apache Storm system?

To kill a topology in Apache Storm, you just need to run a simple command - Storm kill {storm name}

13. Do Apache has a search engine?

Yes, Apache includes a search engine to search relevant data with proper search title.

14. Do Apache Storm includes an SSL? If no, then why?

No, Apache Storm doesn’t include any security socket layer. SSL is not included in Apache Storm to avoid any legal or bureaucratic issues.

15. Do Apache Storm offers any database integration facility?

Well, No. Apache Storm is an HTTP server, not an application server. This is the reason why database integration facility is not available in Apache Storm.

Read: A Beginner's Tutorial Guide For Pyspark - Python + Spark

16. What is the difference between Apache Kafka and Apache Storm?

Well, there is only a minor difference between two that can be understood by the experts only after practical implementation. Apache Kafka is a distributed robust messaging system that is capable to handle a large amount of data and passes messages from one end to other.

At the same time, Apache Storm is a distributed real-time computation system that performs necessary manipulation and calculation of data. In brief, Apache Storm fetches data from Kafka modules and perform necessary manipulation on it.

17. There is any Java support available in Apache storm?

No, there doesn’t come any java support for storm apps.

18. There is ASP (Active Server Pages) support available in Apache storm?

No, there doesn’t come any ASP support for storm apps.

19. What is the role of combiner aggregator in Apache Storm?

A combiner aggregator is used to group tuples into a unified field.

20. Can we run Apache as a root? If yes, what are the security risks?

Well, this is absolutely possible running Apache as a root. For root process, it calls port 80 but never listens to it. The best part is that no user will get the root rights without admin permissions.