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

Big Data Interview Questions

Questions Answers Views Company eMail

Can you explain bloommapfile.

453

Why is checkpointing important in hadoop?

468

What happens when two clients try to access the same file in the hdfs?

455

What do you know about the speculative execution?

458

What are the differences between hadoop 1 and hadoop 2?

434

Why do the nodes are removed and added frequently in a hadoop cluster?

475

What is a namenode?

397

Can hadoop handle streaming data?

461

What is hadoop? Name the main components of a hadoop application?

445

What do you know about yarn?

413

What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

444

What is the purpose of exploding in hive?

670

Can you list few commonly used hive services?

657

What is the difference between piglatin and hiveql?

655

How can you transfer data from hive to hdfs?

709

Un-Answered Questions { Big Data }

State the differences between a node, a cluster and datacenter in Cassandra?

What are the benefits of block transfer?

994

How to create table in hive for a json input file?

824

How much space will the split occupy in Mapreduce?

672

What is Streaming / Log Data?

Explain Data Type Conversion in Hive?

717

Explain how Hive Deserialize and serialize the data?

737

What are the other components of ambari that are important for automation and integration?

Explain parquet file?

281

Explain the core methods of the reducer?

511

What is the difference between MapReduce engine and HDFS cluster?

100

Which method is used to access HFile directly without using HBase?

205

Differentiate between drop and truncate in cqlsh

What do you mean by data center in Cassandra?

How does pig work?

599

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