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

Big Data Interview Questions

Questions Answers Views Company eMail

Explain how input and output data format of the hadoop framework?

750

when hadoop enter in safe mode?

796

How to enable recycle bin or trash in hadoop?

737

Whats is distributed cache in hadoop?

717

what should be the ideal replication factor in hadoop?

697

What is difference between secondary namenode, checkpoint namenode & backupnod secondary namenode, a poorly named component of hadoop?

765

How to resolve ioexception: cannot create directory, while formatting namenode in hadoop?

770

How does an hadoop application look like or their basic components?

773

What mechanism does hadoop framework provides to synchronize changes made in distribution cache during runtime of the application?

714

What is partitioning?

515

Can we change the file cached by distributed cache

478

Why would nosql be better than using a sql database? And how much better is it?

525

Why we use intwritable instead of int? Why we use longwritable instead of long?

536

What happens if you don?t override the mapper methods and keep them as it is?

517

What are the side data distribution techniques?

534

Un-Answered Questions { Big Data }

Define the Use of MapReduce?

726

What are the core components that are utilized in hadoop?

566

What are the hadoop configuration files at present?

535

what Hive is composed of ?

729

Explain about catalog configuration?

What is sqoop in Hadoop ?

751

Compare Hadoop 2 and Hadoop 3?

473

What is the relationship between Jobs and Tasks in Hadoop?

662

Explain the uses of Map Reduce in Pig?

587

Are job tracker and task trackers present in separate machines?

511

How can you control the number of mappers used by the sqoop command?

What are the ways to launch Apache Spark over YARN?

298

What is log compaction?

583

What is Internal and External table in Hive?

761

What are the best features of impala?

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