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

Explain bucketing in Hive?

892

How to optimize Hive Performance?

762

What is the difference between CREATE TABLE AND CREATE EXTERNAL TABLE?

746

Explain Hive Thrift server?

733

Differentiate between PigLatin and Hive?

738

How is HCatalog different from Hive?

722

Which java class handles the output record encoding into files which result from Hive queries?

712

What is the significance of the line set hive.mapred.mode = strict;?

865

How to Write a UDF function in Hive?

739

Which java class handles the Input record encoding into files which store the tables in Hive?

781

What is the importance of .hiverc file?

901

When you point a partition of a hive table to a new directory, what happens to the data?

806

What is a generic UDF in the hive?

799

How many types of Tables in Hive?

841

What is the maximum size of string data type supported by Hive?

828

Un-Answered Questions { Hadoop }

What is driver and executor in spark?

327

What do you understand by an inner bag and outer bag in Pig?

884

What is the maximum recommended cell size?

178

What are the key differences between cassandra and traditional rdbms?

What square measure the options of apache mahout?

What are the tools you need to build Ambari?

114

What are the parameters of mappers and reducers?

531

Can you explain commodity hardware?

454

What is the difference between an RDBMS and Hadoop?

697

What is spark execution engine?

388

What do you mean by a bag in Pig?

1034

Explain about trformations and actions in the context of rdds?

324

What is Partition table in Hive?

772

Should the region server be located on all DataNodes?

447

Explain about transformations and actions in the context of RDDs.

363

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