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 are the basic available commands in Hadoop sqoop ?

1018

On What concept the Hadoop framework works?

1237

How to write a Custom Key Class?

978

What if rack 2 and datanode fails?

1108

How client application interacts with the NameNode?

1002

How is the option in Hadoop to skip the bad records?

991

How the HDFS Blocks are replicated?

1015

Explain InputFormat?

1077

What is Rack awareness?

1056

How will format the HDFS ?

1131

what are the steps involved in commissioning adding

956

How to use Apache Zookeeper command line interface?

1207

Can NameNode and DataNode be a commodity hardware?

1741

What are the steps to submit a Hadoop job?

961

What is the heartbeat used for?

1085

Un-Answered Questions { Big Data }

List some use cases where Spark outperforms Hadoop in processing.

307

What is the spark driver?

344

Explain the operations of Apache Spark RDD?

302

Give the name of some components of Cassandra?

What are components of Cassandra Data Model?

What is the port number for NameNode

889

How will you list all the columns of a table using Apache Sqoop?

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1368

Name different types of primary keys in Cassandra?

Explain Usage of Hive?

751

How ordering in hdfs is finished?

481

Explain how mapreduce works.

679

What is the fundamental difference between a MapReduce InputSplit and HDFS block?

679

Explain mappartitions() and mappartitionswithindex()?

440

What is hadoop, hbase, hive and cassandra? Specify similarities and differences among them.

132

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