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

Big Data Interview Questions

Questions Answers Views Company eMail

In which scenario Hive is good fit?

981

Can i access Hive Without Hadoop ?

1 2699

What is difference between internal and external tables in hive?

1 2428

When Hive is run in embedded mode

1881

Can you execute Hadoop dfs Commands from Hive CLI? How?

1166

List the various options available with the Hive command?

903

Why Mapreduce output written in local disk?

999

What is identity mapper and reducer? In which cases can we use them?

1006

Is YARN a replacement of Hadoop MapReduce?

1 2020

Which interface needs to be implemented to create Mapper and Reducer for the Hadoop?

1214

What is the Hadoop MapReduce API contract for a key and value Class?

1292

Explain the Reducer's Sort phase?

884

What can be optimum value for Reducer?

947

When is the reducers are started in a MapReduce job?

862

What is the input type/format in MapReduce by default?

1070

Un-Answered Questions { Big Data }

Difference between cassandra and mongodb?

How do you handle compression in pig?

561

What is sqoop in Hadoop ?

684

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

298

What types of costs are associated in creating index on hive tables?

838

What is Reducer in Hadoop?

549

Why password is needed in ssh localhost?

801

What is salary of hadoop developer?

690

Mention how many operational commands in hbase?

288

How to Administering Hadoop?

902

What is the use of map transformation?

312

what Hive query processor does?

667

What happens when two clients try to access the same file on HDFS?

185

Explain first() operation in Apache Spark?

299

Differentiate Reducer and Combiner in Hadoop MapReduce?

680

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