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 do I download apache mahout?

What is the maximum size of a message that can be received by the kafka?

588

What are the features of kafka?

584

What are the role of kafka producer api plays?

546

What are the benefits of apache kafka over the traditional technique?

1038

When does queuefullexception occur?

689

What is the main difference between kafka and fume?

625

How to start kafka server?

613

What is partitioning key?

592

What is kafka?

602

What are the different components that are available in kafka?

549

How to start zookeeper server?

What is the role of the zookeeper?

Difference between cassandra and mongodb?

What we need to be taken care while adding a column?

102

Un-Answered Questions { Hadoop }

What is a bag in apache pig?

576

How does job tracker schedule a job for the task tracker?

492

What are the differences between a node, a cluster, and datacenter in Cassandra?

What are the characteristics of hadoop framework?

702

How to insert records in apache tajo?

Explain count_star?

612

What is kafka technology?

551

What is the roadmap for apache mahout version 1.0?

How can you remove the elements with a key present in any other RDD?

311

Write a Hive UDF that returns a sentiment score. For example, if good = 1, bad = -1, and average = 0, then a review of a restaurant states "Good food, bad service," your score might be 1 - 1 = 0.

733

Explain the difference between gen1 and gen2 hadoop with regards to the namenode?

769

What is cluster in Cassandra?

What are the log files of the presto server?

How to sort intermediate output based on values in MapReduce?

696

Explain how does hbase actually delete a row?

171

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