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Hadoop Interview Questions
Questions Answers Views Company eMail

What is a bag in Pig Latin?

863

What are the different Relational Operators available in pig language?

732

What are the different ways of executing Pig script?

789

Explain the LOAD keyword in Pig script?

627

What is a MapFile?

740

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

675

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

711

Highlight the key differences between MapReduce and Apache Pig?

708

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

687

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

661

Mention the common features in Pig and Hive?

917

What are the debugging tools used for Apache Pig scripts?

783

Differentiate between Hadoop MapReduce and Pig?

645

What is a UDF in Pig?

740

Differentiate between GROUP and COGROUP operators?

629


Un-Answered Questions { Hadoop }

What is the most widely used API Write Data to Cassandra ?

87


Explain what is a column family in cassandra?

124


What is spark used for?

268


is HQL case sensitive?

863


How to add/delete a Node to the existing cluster?

524


Explain Accumulator in Spark?

433


What is the local repository and where it is useful while using ambari environment?

60


How to compress mapper output in Hadoop?

677


Which file systems does Spark support?

290


What is the role zookeeper plays in a cluster of kafka?

496


What is data skew and how do you fix it?

332


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

5


Explain the fundamental difference between Cassandra and Hadoop?

224


How do I clear my spark cache?

273


what is NameNode in Hadoop?

878