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

Is the keyword 'DEFINE' like a function name?

993

What is the difference between Cassandra, Pig and Hive?

1049

Does 'ILLUSTRATE' run MR job?

894

What is the use of "order by" in Hive?

1017

What are the different components of a Hive query processor?

1475

If you run hive as a server, what are the available mechanism for connecting it from application?

935

How to use Hive using the command line and Beeline?

985

What is Hive Data Definition language?

1016

How to enable buckets in Hive?

1000

What is the difference between external table and managed table?

1017

What are the different Complex Data Types available in Hive?

942

Difference between external table and internal table in HIVE ?

970

When you should use Hbase?

949

What is CONCATENATE command in Hive?

972

What is dynamic partitioning and when is it used?

1108

Un-Answered Questions { Hadoop }

What is a commodity hardware? Does commodity hardware include RAM?

557

Explain HCatalog Architecture in Brief?

How many types of nosql databases?

Is it possible to run Apache Spark without Hadoop?

295

What is hbase fsck?

218

How ordering in hdfs is finished?

474

What is an Agent?

How can you set an arbitrary number of mappers to be created for a job in Hadoop?

501

While writing evaluate UDF, which method has to be overridden?

608

What are the various libraries available on top of Apache Spark?

326

What is lineage graph in Apache Spark?

361

What is the difference between logical and physical plans?

588

Define commit log?

What is a Hive variable? What for we use it?

849

Explain the role of Streams API?

585

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