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 }

Say when to pick “inward table” and “outside table” in hive?

704

Explain how to Tune Kafka for Optimal Performance?

533

Does spark use yarn?

258

Explain what is distributed cache in mapreduce framework?

616

What is key-value store db?

What is the logical plan in pig architecture?

569

Is hadoop still in demand?

447

How is security achieved in Apache Hadoop?

909

What do sorting and shuffling do?

696

List some use cases where classification machine learning algorithms can be used.

463

What is Hadoop streaming?

1046

What does repartition do in spark?

328

what does the conf.setMapper Class do ?

815

Explain the Single point of Failure in Hadoop?

477

What is tunable consistency in Cassandra?

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