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 do you understand by Data Replication in Cassandra?

What is the usage of "cqlsh-version" command?

148

What is the use of paging cqlsh command in Cassandra?

What was the design goal of Cassandra?

Define replication strategy?

What is the function of consistency cqlsh command in Cassandra?

What is Cassandra-CQL collection?

What is CQLSH in Cassandra?

What are the benefits/ advantages of Cassandra?

Explain when to use explode in Hive?

702

Why do we need buckets?

714

What is the difference between Internal Table and External Table in Hive?

726

what are the different modes of Hive?

702

In Hive, can you overwrite Hadoop MapReduce configuration in Hive?

771

Explain how can you change a column data type in Hive?

697

Un-Answered Questions { Big Data }

Explain the flatMap operation on Apache Spark RDD?

318

In which language Cassandra is written?

Name the filter which accepts the page size as the parameter in hbase?

184

How would you restart NameNode?

422

Define the use of Source Command in Cassandra?

Differentiate between drop and truncate in cqlsh

Why is Spark RDD immutable?

370

What relational operators can we use that are related to combining and splitting in Pig language?

553

What is Buckets in Hive?

745

How to specify more than one directory as input to the MapReduce Job?

697

Which are the methods to create rdd in spark?

295

Bag in pig ?

575

How do you parse data in xml? Which kind of class do you use with java to parse data?

338

Is secondary namenode a substitute to the namenode?

684

How can a user get the information on the version of CQLSH?

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