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 is a bloom filter?

162

Explain what is hbase?

150

hbase support syntax structure like sql. Yes or no?

200

What happens if you alter the block size of a column family on an already occupied database?

218

Define the term thrift

134

Explain what does hbase consists of?

159

Why to use hbase?

154

Explain what happens if you alter the block size of a column family on an already occupied database?

168

Explain totuple function?

600

Explain avrostorage function?

626

How do you handle compression in pig?

561

How do you organize the pig latin statements?

577

Explain tobag function?

553

How do you run the pig scripts in local mode?

526

What is flatten in pig?

620

Un-Answered Questions { Hadoop }

How rdd can be created in spark?

264

Give examples of some companies that are using Hadoop structure?

440

Explain how you can reduce churn in isr? When does broker leave the isr?

746

Explain the term Cluster?

105

What are ‘reduces’?

703

How does Cassandra delete data?

What are the limitations of the Pig?

569

Explain about transformations and actions in the context of RDDs.

347

What do you know by storage and compute node?

689

When to use Hive?

701

How mahout used with python ?

161

What is the difference between TextInputFormat and KeyValueInputFormat class?

499

what is the meaning of broker in Kafka?

543

While starting hadoop services, datanode service is not running?

439

What is the default maximum dynamic partition that can be created by a mapper reducer? How can you change it?

718

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