Big Data Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Big Data Interview Questions

Questions Answers Views Company eMail

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?

How Sqoop word came? Sqoop is which type of tool and the main use of sqoop?

What is Sqoop Import Mainframe Tool and its Purpose?

Un-Answered Questions { Big Data }

Explain why the name ‘hadoop’?

708

Explain why do we need hadoop?

660

If no custom partitioner is defined in Hadoop then how is data partitioned before it is sent to the reducer?

451

What is session in Cassandra?

157

When Namenode is down what happens to job tracker?

697

What is Apache Spark Streaming?

325

What is indexing and why do we need it?

825

What is spark code?

315

What is a DStream?

329

Can you define what is Event Serializer in Flume?

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.

682

How hbase handles the write failure?

208

Explain the Scope operators used in hbase?

182

What is the difference between Pig and MapReduce?

609

Explain Spark leftOuterJoin() and rightOuterJoin() operation?

300

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