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 Reliability and Failure Handling in Apache Flume?

106

Any two Limitations of Flume?

Types of Data Flow in Flume?

111

What are Flume core components?

What are the important steps in the configuration?

Can you define what is Event Serializer in Flume?

What are the Data extraction tools in Hadoop?

Explain data flow in Flume?

What are the similarities and differences between Apache Flume and Apache Kafka?

107

What is sink processors?

What is Purpose to Validate in Sqoop?

What is the purpose of sqoop-merge?

What is the usefulness of the options file in sqoop?

How can you control the mapping between SQL data types and Java types?

How can you control the number of mappers used by the sqoop command?

Un-Answered Questions { Hadoop }

What is key-value store db? Explain with an example.

When to use Hive?

701

What is hadoop spark?

299

What is salting in spark?

415

Can you briefly explain the apache mahout?

What is spark and what is its purpose?

266

Does Apache Flume provide support for third party plug-ins?

How do you parse data in xml? Which kind of class do you use with java to parse data?

338

Can you explain textinformat?

497

How is spark fault tolerance?

399

What is in memory in spark?

282

Differentiate between Hadoop MapReduce and Pig?

645

How to format the HDFS? How frequently it will be done?

Define the management tools in Cassandra?

How to change a number of mappers running on a slave in MapReduce?

789

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