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

Big Data Interview Questions

Questions Answers Views Company eMail

What are the identity mapper and reducer in MapReduce?

781

How to optimize Hadoop MapReduce Job?

632

How to specify more than one directory as input in the Hadoop MapReduce Program?

714

How to change the name of the output file from part-r-00000 in Hadoop MapReduce?

652

Which one will you decide for an undertaking – Hadoop MapReduce or Apache Spark?

615

In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?

645

How to overwrite an existing output file/dir during execution of Hadoop MapReduce jobs?

625

What is the relation between MapReduce and Hive?

643

What are advantages of Spark over MapReduce?

692

What is the use of InputFormat in MapReduce process?

651

What is Counter in MapReduce?

676

What is the difference between a MapReduce InputSplit and HDFS block?

752

How to compress mapper output in Hadoop?

676

Why is Apache Spark faster than Hadoop MapReduce?

656

Define MapReduce?

690

Un-Answered Questions { Big Data }

How do I optimize my spark code?

306

What is the best way to copy files between HDFS clusters?

668

What are Pig Execution modes?

615

How can you delete the DBPROPERTY in Hive?

638

When to use Avro, explain?

When is the reducers are started in a MapReduce job?

864

Explain what are the tools used in Big Data?

124

Explain pigstorage function?

594

What is the abstraction of Spark Streaming?

263

Mention what are the data components used by Hadoop?

659

Is Hive useful when making data warehouse applications?

738

Mention some instances where zookeeper is using?

How much is flume worth?

Explain the terms Spark Partitions and Partitioners?

303

Explain tomap function?

591

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