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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

What is the use of tools command?

190

Which command do we use to show the version?

160

What are the DDL commands used in hbase?

152

How will you explain COGROUP in Pig?

553

What are the 2 modes used to run pig scripts?

576

What co-group does in Pig?

595

Is the keyword ‘FUNCTIONAL’ a User Defined Function (UDF)?

507

Is the keyword ‘DEFINE’ as a function name?

522

How to show up details in pig ?

558

What does FOREACH do?

529

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

525

What are the different modes available in Pig?

505

How is Pig Useful For?

603

How to restrict the number of lines to be printed in pig ?

545

What is the difference between logical and physical plans?

521

Un-Answered Questions { Hadoop }

Can we say a COGROUP is a group of more than 1 data set?

523

What do you mean by consistency in Cassandra?

184

What port does spark use?

303

Is it possible to rename the output file?

741

Where do you specify the Mapper Implementation?

942

Differentiate between hive and hbase?

712

How kafka communicate with clients and servers?

493

What is setmaster in spark?

288

State syntax of the command that is used to drop a partition?

Can you explain rack awareness?

400

Can we change Replication Factor on a live cluster?

List down the languages supported by Apache Spark?

276

What happen if one of the datanodes has much slower cpu?

387

What are the key features of Apache Spark that you like?

378

Explain Data Type Conversion in Hive?

667

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