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?

709

Why do we need buckets?

732

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

735

what are the different modes of Hive?

718

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

784

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

706

Un-Answered Questions { Big Data }

Write a quert to import a file in sqoop?

What is the purpose of textinputformat?

712

Give examples of the SerDe classes whihc hive uses to Serializa and Deserilize data?

746

How can an application connect to Hive run as a server?

1178

What is the difference between sort by and order by in hive?

692

Map reduce jobs take too long. What can be done to improve the performance of the cluster?

706

What is Spark Streaming?

297

Explain how does hbase actually delete a row?

166

Explain Apache Kafka Use Cases?

555

What are the main components of hadoop?

437

What are the parameters of mappers and reducers?

498

Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

740

Explain pigdump function?

615

Explain Hive Thrift server?

702

Why is jconsole used?

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