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Hadoop Developer
Hadoop is a set of open source programs that can be used as a backbone for any Big Data operation. It provides huge data storage capabilities and the ability to concurrently handle tasks. A Hadoop developer is involved in the development of Big Data applications.
Used for hiring
Hadoop Developers
Big Data Developers
Skills required
Strong knowledge in Hadoop
Programming skills in Java, JS, Node.js and OOAD
Pre-processing using Hive and Pig
Experience with data loading tools - Flume and Sqoop
Familiarity with workflow/schedulers like Oozie
Hadoop Developer Assessment
You can test a candidate on the following areas to assess their proficiency in Hadoop
- Developing code in Hadoop and implementing it
- Proficiency with Java, JS, and Node.js
- Understanding of Hive, Pig, and HBase
- Knowledge of data structures
How this test helps with hiring Hadoop candidates
Steps to assess Hadoop developers
Create a test
Add questions to assess Hadoop skills
Send invites to candidates
Evaluate the report
Common types of assessments used by our top customers
Programming questions to assess development skills in Hadoop
Java, JavaScript and Data structures
Hive and Pig
Sample questions
In Hadoop, which of these phases occurs between the Map and the Reduce phases?
- Copy
- Shuffle and sort Correct Answer
- Compress and send
- Send and copy
In Hadoop, which of the following is the correct syntax to load data from an HDFS?
- hive>load data local inpath <file path> into table <table name>
- hive>load data inpath <file path> into table <table name>Correct Answer
- hive>load data local inpath into table <table name>
- hive>load data local inpath <file path> into table
In Hadoop, which of the following interfaces needs to be implemented to create the Mapper and Reducer?
- org.apache.hadoop.mapreduce.Mapper and org.apache.hadoop.mapreduce.reducerCorrect Answer
- org.hadoop.mapreduce.Mapper and org.hadoop.mapreduce.reducer
- org.apache.hadoop.Mapper and org.apache.hadoop.reducer
- org.hadoop.mapreduce.Mapper and org.hadoop.mapreduce.reducer
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