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 is Hadoop Map Reduce ?

805

what does the text input format do?

815

What happens when a datanode fails ?

778

In Hadoop, which file controls reporting in Hadoop?

774

how can you debug Hadoop code?

838

For a job in Hadoop, is it possible to change the number of mappers to be created?

785

What are the primary phases of a Reducer?

823

how indexing in HDFS is done?

855

What is the role of a MapReduce partitioner?

806

Is it important for Hadoop MapReduce jobs to be written in Java?

845

what job does the conf class do?

788

What is the key- value pair in Hadoop MapReduce?

679

What is InputFormat in Hadoop MapReduce?

666

What are the various InputFormats in Hadoop?

650

Explain InputSplit in Hadoop MapReduce?

674

Un-Answered Questions { Big Data }

Is apache spark going to replace hadoop?

353

What comes in Hadoop 2.0 and MapReduce V2 YARN

1003

What are problems with small files and hdfs?

Knox and Hadoop Development Tools?

926

What is Ambari shell?

Define composite type in Cassandra?

What is a checkpoint?

966

As part of optimizing the queries in hive, what should be the order of table size in a join query?

697

What is the difference between spark and scala?

354

Explain the difference between a MapReduce InputSplit and HDFS block?

657

What is the need of key-value pair to process the data in MapReduce?

668

What are benefits of DataFrame in Spark?

328

Can you explain apache kafka?

516

How does data transfer happen from hdfs to hive?

148

Why we use parallelize in spark?

289

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