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

Define the Use of Pig?

509

Can we say a COGROUP is a group of more than 1 data set?

519

What are the Applications of Apache Pig?

525

Bag in pig ?

530

Whether Pig Latin language is case-sensitive or not?

611

What are the relational operators available related to Grouping and joining in Pig language?

450

What are the primitive data types in Pig?

500

What is atom in pig?

497

What is UDF in Pig?

617

What is the purpose of ‘dump’ keyword in Pig?

576

What is Grunt shell?

538

Why do we use ‘filters’ Pig scripts?

561

How to fetch particular columns in pig?

549

What is the bag?

488

What is Flatten?

507

Un-Answered Questions { Hadoop }

Can we change Replication Factor on a live cluster?

What are the basics of zookeeper api?

Is spark secure?

264

What is cluster mode in spark?

299

How is the processing of streaming data achieved in Apache Spark? Explain.

268

Explain about the core components of Flume?

How does bloom filter help in searching rows?

215

Please explain apache kafka?

501

What do you mean by the high availability of a namenode?

Explain the Reducer's reduce phase?

1013

What is the role of zookeeper in hbase?

182

How can we check whether namenode is working or not?

619

Is spark built on top of hadoop?

294

Does cassandra support acid tractions?

Who was the original author of Cassandra?

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