Hadoop administrator Interview Questions
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Hadoop Administrator interview questions shared by candidates
Java Based Questions, Explain OOPS Concepts, Interface, Given a CSV text file how would write code to display the Second column Values. Other than java, which programming language you know to write this programme.
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The OOPS Concepts and Interface questions are pretty simple to answer. For the CSV file, a quick and dirty solution would be to use a file reader to read the file line by line, split on the comma and print out index 1 of the list resulting from the split. (index starts at 0) Easiest alternative to Java is python, which is pretty much exactly the same method. This is by no means the most efficient implementation Less
Basic about Hadoop Environment,Roles and responsibility,Day to Day Activities in the Hadoop.
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I have prepared well for interview and give all the answers
The technical round was quite easy they asked basic things about Hadoop Architecture, Cloudera Administration,Security setup using kerbros, NameNode HA
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I answered most of the questions asked
Questio asked regarding the Big data Mapr Distribution and mainly for snapshot.
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I give answer of all questions.
What are the basic demons of hadoop?
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Namenode , Secondary namenode , Job Tracker , Datanode , Task Tracker. Explained the use of the demons and also how many NN can a cluster have. Explained about the ecosystem tools I used and the troubleshooting things Some basic linux command and write a script to copy files. How to copy file from one cluster to another Less
Started about the cluster installation : deep questions into installation Yarn : how can we you docker for containerization.
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It went well
How do you automate a particular process if you haven't use before a particular tool
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I would automate that process using shell scripts and ansible
They asked mostly about hive and its Queries and how u have backed up data using cludera Manager and hdfa commamds
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I answered it correctly tly
Salary expectations - unprofessional behaviour and no hike
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No hike given on my current package