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 a bag in Pig Latin?

897

What are the different Relational Operators available in pig language?

768

What are the different ways of executing Pig script?

836

Explain the LOAD keyword in Pig script?

671

What is a MapFile?

784

Name the scalar data type and complex data types in Pig?

708

What are the relational operators available related to combining and splitting in pig language?

751

Highlight the key differences between MapReduce and Apache Pig?

756

How to write 'foreach' statement for bag datatype in pig scripts?

723

State the usage of 'filters', 'group' , 'orderBy', 'distinct' keywords in pig scripts?

698

Mention the common features in Pig and Hive?

947

What are the debugging tools used for Apache Pig scripts?

824

Differentiate between Hadoop MapReduce and Pig?

676

What is a UDF in Pig?

778

Differentiate between GROUP and COGROUP operators?

676

Un-Answered Questions { Hadoop }

What is the role of Consumer API?

547

Explain what is “map” and what is "reducer" in hadoop?

704

What is the difference between Hadoop and RDBMS?

684

Which is better hadoop or spark?

312

How to Delete directory from HDFS?

How to write a query in Cassandra?

126

What is a yaml file in cassandra?

Does spark use hive?

288

Can spark work without hadoop?

353

In MapReduce, ideally how many mappers should be configured on a slave?

709

State the usage of 'filters', 'group' , 'orderBy', 'distinct' keywords in pig scripts?

698

Explain Working of MapReduce?

1035

Define Cluster?

111

What is dag spark?

345

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

769

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