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

Explain the architecture of Hadoop Pig?

761

What is the difference between Apache Pig and Hive?

607

What is the difference between Pig and MapReduce?

609

Explain Features of Pig?

673

What is Pig Storage?

604

While writing evaluate UDF, which method has to be overridden?

573

What are the different UDF’s in Pig?

654

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

907

What are the core components of Apache Hadoop?

784

What is the difference between Apache Hadoop and RDBMS?

807

How is security achieved in Apache Hadoop?

909

What is Apache Hadoop?

855

What is a “Distributed Cache” in Apache Hadoop?

777

What is the problem with small files in Apache Hadoop?

783

What is Rack Awareness in Apache Hadoop?

811

Un-Answered Questions { Hadoop }

How to set property in apache tajo?

In MapReduce, ideally how many mappers should be configured on a slave?

664

How to optimize MapReduce Job?

649

What is the throughput? How does hdfs give great throughput?

Name the Spark Library which allows reliable file sharing at memory speed across different cluster frameworks.

308

What happens if rdd partition is lost due to worker node failure?

454

What is a secondary namenode?

628

How much space will the split occupy in Mapreduce?

672

What is the stable version of Hive ?

2629

What is spark dynamic allocation?

308

What are the features of presto?

What is Hadoop Custom partitioner ?

1002

When can you use ALTER KEYSPACE?

Explain a common use case for Flume?

How does speculative execution work in Hadoop?

435

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