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 apache hbase?

149

The difference between GROUP and COGROUP operators in Pig?

573

What are the data types of Pig Latin?

566

why should we use 'group' keyword in pig scripts?

562

How Pig programming gets converted into MapReduce jobs?

620

What are the different modes in which PIG can run and explain those?

493

Explain about the execution plans of a Pig Script? Or Differentiate between the logical and physical plan of an Apache Pig script?

609

What are the differences between PIG and MapReduce?

594

What is the logical plan in pig architecture?

571

What is the function of UNION and SPLIT operators? Give examples?

537

Why do we need Pig?

828

Does Pig differ from MapReduce? If yes, how?

597

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

617

How can we see only top 15 records from the student.txt out of100 records in the HDFS directory?

585

What are the limitations of the Pig?

569

Un-Answered Questions { Hadoop }

The partition of hive table has been modified to point to a new directory location. Do I have to move the data to the new location or the data will be moved automatically to the new location?

1005

What is the core of the job in MapReduce framework?

856

In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?

645

List out some common problems faced by data analyst?

457

How to remove safemode of namenode forcefully in HDFS?

What are the different math functions available in Pig?

521

Is fs.mapr.working.dir a single directory?

689

What is the difference between spark and apache spark?

320

Pig Features ?

618

Mention what is the benefits of apache kafka over the traditional technique?

613

What is Slot in Hadoop v1? Why was it removed from Hadoop v2?

515

State the difference between Spark SQL and Hql

357

Explain the run-time architecture of Spark?

296

Mention what are the type of database does Hive support ?

691

Bag in pig ?

579

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