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

How Pig differs from MapReduce?

840

Why are the number of splits equal to the number of maps?

1010

What are the Data types in Pig?

952

What are the two main components of ResourceManager?

1195

MapReduce Types and Formats and Setting up a Hadoop Cluster?

961

How will you make changes to the default configuration files?

1011

What are the different types of Znodes?

1011

How many instances of JobTracker can run on a Hadoop Cluser?

1050

What's the best way to copy files between HDFS clusters?

1391

Can Apache Kafka be used without Zookeeper?

1083

What is Your Cluster size ?

1468

What is the default block size in hdfs?

1082

What are active and passive "NameNodes"?

1508

It can be possible that a Job has 0 reducers?

1005

What are combiners and its purpose?

976

Un-Answered Questions { Hadoop }

How do I change hive execution engine to spark?

315

What are some alternatives to apache kafka?

599

Can you define inputsplit in hadoop?

515

How to managed create a table in hive ?

764

What is the difference between spark and python?

326

What is big data spark?

330

What is the difference between coalesce and repartition in spark?

333

What is difference between spark and hadoop?

270

Can we have different replication factor of the existing files in hdfs?

What is the Cassandra Coefficient ?

What is the purpose of JConsole?

What does a Spark Engine do?

339

How to setup the local repository manually?

Explain Hadoop streaming?

510

How can you native libraries be included in yarn jobs?

472

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