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 the advantages of pig language?

922

What are the different execution mode available in Pig?

1092

Define Spark Streaming.

427

Hadoop uses replication to achieve fault tolerance. How is this achieved in Apache Spark?

428

What is lineage graph?

472

What are benefits of Spark over MapReduce?

470

List the functions of Spark SQL?

503

What is RDD?

502

How to create RDD?

513

Does Apache Spark provide check pointing?

417

Explain about the popular use cases of Apache Spark

436

Do you need to install Spark on all nodes of Yarn cluster while running Spark on Yarn?

663

What are the different String functions available in pig?

852

Differentiate between the physical plan and logical plan in Pig script?

813

What are the use cases of Apache Pig?

837

Un-Answered Questions { Hadoop }

Explain what is hadoop?

469

What are the components of apache ambari architecture?

Can you join multiple fields in Apache

577

How kafka communicate with clients and servers?

560

What can skew the mean?

298

What is a DStream?

333

What is spark vectorization?

334

What is the major difference between local and remote meta-store?

951

What is JPS? Why is it used in Hadoop?

585

What is the difference between MapReduce engine and HDFS cluster?

108

What is structured data?

694

Which is better scala or python for spark?

312

While loading data into a hive table using the load data clause, how do you specify it is a hdfs file and not a local file ?

770

What are the general Prerequisites to learn HCatalog?

What are the actions in spark?

295

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