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

Tell any two feature Flume?

Explain what are the tools used in Big Data?

124

What is Flume event?

What are possible types of Channel Selectors?

103

What are the complicated steps in Flume configurations?

144

What is Flume Client?

Can flume provide 100% reliability to the data flow?

What are use cases of Apache Flume?

can you explain about configuration files?

What is Streaming / Log Data?

Why Flume?

180

What is flume agent?

What is FlumeNG?

Is there any difference between FileSink and FileRollSink?

Agent communicate with other Agents?

Un-Answered Questions { Hadoop }

What is a generic udf in hive?

733

What is LazyOutputFormat in Hadoop?

495

Explain Spark SQL caching and uncaching?

331

Explain various Apache Spark ecosystem components. In which scenarios can we use these components?

381

What do you understand by Pair RDD?

385

Does Cassandra works on Windows?

What are the main features of impala?

Explain a scenario where you will be using spark streaming.

1458

Hdfs stores data using commodity hardware which has higher chances of failures. So, how hdfs ensures the fault tolerance capability of the system?

Tell any two features of flume?

116

Explain what do you understand by cassandra- cql collections?

Does spark use yarn?

258

What is Cassandra?

Explain pipe() operation in Apache Spark?

311

How to create custom key and custom value in MapReduce Job?

602

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