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?

749

when hadoop enter in safe mode?

794

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

477

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

524

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?

532

Un-Answered Questions { Big Data }

Use of Codegen command in Hadoop sqoop?

Mention if we can name view same as the name of a Hive table?

726

What are the debugging tools used for Apache Pig scripts?

827

When not to use apache kafka?

578

How to use combiner in hadoop ?

487

What is map side join?

317

Define SSTable?

In MapReduce how to change the name of the output file from part-r-00000?

675

How will you connect Apache Spark with Apache Mesos?

284

What is a block in HDFS, why block size 64MB?

how indexing in HDFS is done?

901

What are the different types of Znodes?

1013

Define data integrity? How does hdfs ensure data integrity of data blocks stored in hdfs?

Describe Spark SQL?

362

What is setappname spark?

339

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