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 are Pig Execution modes?

559

What is bag data type in Pig?

624

How to load data in pig?

564

What are the Optimizations a developer can use during joins?

497

Why should we use ‘orderby’ keyword in pig scripts?

489

What are the different math functions available in Pig?

477

What is Pig Latin?

532

Tell me about the execution modes of Apache Pig?

513

What is a tuple?

2 1094

Why should we use ‘distinct’ keyword in Pig scripts?

487

What are the different Eval functions available in Pig?

522

What are the scalar data types in Pig?

563

State the limitations of Apache Pig?

569

Why we use BloomMapFile?

560

What is a skewed join?

558

Un-Answered Questions { Hadoop }

How many job tracker processes can run on a single Hadoop cluster?

445

Where is the Mapper Output intermediate kay-value data stored ?

1310

Can you explain the term, Cassandra?

What daemons run on master nodes?

444

What is column store db? Explain with an example.

Explain about the bloommapfile?

577

Is ambari python client can be used to make good use of ambari api’s?

What is Safemode in Apache Hadoop?

683

How can an application connect to Hive run as a server?

1107

What is difference between regular file system and HDFS?

996

Explain when using field grouping in storm, is there any time-out or limit to known field values?

558

RLIKE in Hive?

725

Why is spark good?

265

Whats is distributed cache in hadoop?

634

How does apache spark engine work?

286

For More Un-Answered { Hadoop } Questions Click Here