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?

863

What are the different Relational Operators available in pig language?

732

What are the different ways of executing Pig script?

788

Explain the LOAD keyword in Pig script?

627

What is a MapFile?

739

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?

706

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?

782

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 ZooKeeper quorum?

Describe Memtable?

Why is pig used in hadoop?

572

Explain data versioning?

178

How is the splitting of file invoked in Hadoop ?

535

What are the ways to run spark over hadoop?

312

What is the Job interface in MapReduce framework?

908

Explain hive udf function?

528

State benefits of Hadoop users by using Apache Ambari?

What is a TaskInstance?

668

Which one is the master node in HDFS? Can it be commodity hardware?

Who is intended audience to learn HCatalog?

What is shuffleing in mapreduce?

648

What is sample Query in Hive?

699

What is the feature that they have added in the latest release?

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