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?

828

What are the different execution mode available in Pig?

1024

Define Spark Streaming.

396

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

403

What is lineage graph?

447

What are benefits of Spark over MapReduce?

446

List the functions of Spark SQL?

470

What is RDD?

474

How to create RDD?

483

Does Apache Spark provide check pointing?

398

Explain about the popular use cases of Apache Spark

410

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

621

What are the different String functions available in pig?

781

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

733

What are the use cases of Apache Pig?

768

Un-Answered Questions { Hadoop }

Explain about the core components of Flume?

What is the difference between Input Split and an HDFS Block?

What is the difference between the ZooKeeper ensemble and ZooKeeper quorum?

Write the command to copy a file from linux to hdfs?

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

492

What are the most common InputFormats in Hadoop?

555

On what all basis can you differentiate rdd, dataframe, and dataset?

294

Can You Use Apache Spark To Analyze and Access Data Stored In Cassandra Databases?

291

Mention what are the three modes in which hadoop can be run?

395

How can we create RDD in Apache Spark?

293

Developing a MapReduce Application?

916

Explain the process that overwrites the replication factors in HDFS?

Why do we need Hadoop?

496

What is a primary key? And what are it’s different types?

how Cassandra writes changed data into commitlog?

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