Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

What happens to a namenode, when job tracker is down?

752

What does the command mapred.job.tracker do?

777

How to come out of the insert mode?

787

What is the full form of fsck?

702

Why do we need a password-less ssh in fully distributed environment?

709

Can you give us some more details about ssh communication between masters and the slaves?

703

Can you tell us more about ssh?

716

What is shark?

284

Name a few commonly used spark ecosystems?

286

What is hive on spark?

389

Can we do real-time processing using spark sql?

310

How sparksql is different from hql and sql?

501

What is a parquet file?

284

How to split single hdfs block into partitions rdd?

How does data transfer happen from hdfs to hive?

148

Un-Answered Questions { Big Data }

Explain what is storage and compute nodes?

512

UPPER or UCASE function in Hive with example?

800

Explain how can spark be connected to apache mesos?

285

What is the difference between an inputsplit and a block?

630

Can we run unix shell commands from the hive? Give example?

746

How can we launch a tajo cluster?

How Sqoop can be used in a Java program?

What are the exception handling operators in Pig script?

578

What is difference between flume and sqoop?

196

Explain the various Transformation on Apache Spark RDD like distinct(), union(), intersection(), and subtract()?

299

What is shuffling and sorting in mapreduce?

642

Is hadoop a database?

682

What is a spark shuffle?

334

What is the history of apache mahout? Once did it start?

Can we run Apache Spark without Hadoop?

306

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