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Hadoop Online Test
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Hadoop Online Test

iMocha’s Hadoop assessment test enables recruiters and hiring managers to hire job-fit candidate within a short period and take unbiased decision. This test is useful for hiring Hadoop Developer, Big Data Hadoop Developer, Hadoop Application Developer, Hadoop specialist, and Hadoop analyst. Our test has helped our customers to reduce technical screening time by 80%.

Hadoop Online Test

Hadoop is an open-source scalable framework (sponsored by Apache Software Foundation) that allows distributed processing of large data sets across clusters of computers using the set of programming modules like Hadoop Common, HDFS, YARN, MapReduce. Hadoop library is designed to detect and handle failures at the application layer.

Hadoop online test helps recruiters and hiring managers to assess skills like Hadoop programming, ability to work with data replication in HDFS, resource manager, etc. iMocha’s Hadoop assessment test is created and validated by experienced subject matter experts (SMEs) to assess and hire Hadoop developers as per industry standards.

Hadoop pre-employment test will evaluate a candidate’s practical knowledge and will identify whether the candidate is ready to be employed. Hadoop online test can be taken by the candidates from anywhere at the comfort of their time zone.

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How it works

Test Summary

Hadoop skill assessment test helps you to screen the candidates who possess traits as follows:

  • Deep understanding of Apache Hadoop and surrounding technologies like Pig, HBase, Avro
  • Ability to efficiently work on Hadoop development and its implementation
  • Ability to work with Hadoop HDFS, YARN, MapReduce
  • Strong understanding of integration techniques like ETL
  • Ability to work with workflow schedulers like Oozie, column-oriented data store parquet

iMocha's Hadoop developer online test has a unique set of questions. You can also create or ask us to create a customized test that includes questions which are specific to your job requirement.

Our powerful reporting helps you to analyze section wise performance of candidate to gauge his strengths and weaknesses. Moreover, you can always use our candidate ranking tool to screen the best performing candidate amongst others.

Hadoop skill test may contain MCQs (Multiple Choice Questions), MAQs (Multiple Answer Questions), Fill in the Blanks, Descriptive, Whiteboard Questions, Audio/Video Questions, AI-LogicBox, Coding Simulations, True or False Questions, etc.

Useful for hiring
  • Hadoop Developer
  • Big Data Hadoop Developer
  • Hadoop Application Developer
  • Hadoop specialist
  • Hadoop analyst
Test Duration
No. of Questions
Level of Expertise
Topics Covered

Data Replication

iMocha’s Hadoop online test helps recruiters and hiring managers to evaluate candidate’s understanding about data replication which increases the availability of data whenever fault occurs at server

Task Tracker

Our test helps in assessing candidate’s knowledge about task tracker which accepts tasks in the cluster

Sequence File

This test evaluates candidate’s sequence file which is binary file that contains serialized key/value pairs

Resource Manager

This Hadoop skill test assesses a candidate’s understanding about Resource Manager (RM) which helps in tracking the resources in a cluster, and scheduling applications

Parquet File

Our test evaluates candidate’s knowledge about Parquet file which is used to store data in a column layout by using .parquet file

Mapper / Reducer Task

This Hadoop skill assessment test helps to assess candidate’s understanding about mapper function that processes all input records from a file and generates the output which works as input for Reducer
Sample Question
Choose from our 100,000+ questions library or add your own questions to make powerful custom tests.
Question type
Multiple Option
Topics covered
Hadoop MapReduce


You plan to use a combiner to reduce the amount of data sent to the Reducer. Your output from the Mapper is <IntWritable, Text>. Which of the following should you subclass for using the combiner?


  • Combiner&lt;IntWritable,Text,IntWritable,Text&gt;
  • Combiner&lt;Text,Text,IntWritable,IntWritable&gt;
  • Reducer&lt;IntWritable,Text,IntWritable,Text&gt;
  • Mapper&lt;IntWritable,Text,IntWritable,Text&gt;
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You can customize this test by

Setting the difficulty level of the test

Choose easy, medium, or tricky questions from our skill libraries to assess candidates of different experience levels.

Combining multiple skills into one test

Add multiple skills in a single test to create an effective assessment and assess multiple skills together.

Adding your own
questions to the test

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Requesting a tailor-made test

Receive a tailored assessment created by our subject matter experts to ensure adequate screening.