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

Big Data Interview Questions

Questions Answers Views Company eMail

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

1018

What is DistributedCache and its purpose?

902

What is HDFS ? How it is different from traditional file systems?

916

What is HDFS Block size? How is it different from traditional file system block size?

1 1452

How you can contact your client everyday ?

974

What is Input Split in hadoop?

980

What is 'Key value pair' in HDFS?

960

How to keep HDFS cluster balanced?

1097

What is the port number for NameNode

839

What are the benefits of block transfer?

994

How did you debug your Hadoop code ?

1370

What will you do when NameNode is down?

1004

What is the best hardware configuration to run Hadoop?

1627

Should we use RAID in Hadoop or not?

1058

How to change Replication Factor For below cases ?

1086

Un-Answered Questions { Big Data }

Explain Spark countByKey() operation?

319

What is a spill factor with respect to the ram?

865

When to use secondary indexes?

Explain how does hbase actually delete a row?

166

What is zeromq?

523

What is combiner aggregator?

592

Can impala be used for complex event processing?

169

What is sink processors?

Ideally what should be the block size in hadoop?

461

Highlight the key differences between MapReduce and Apache Pig?

705

Mention what does the text input format do?

414

Can Hadoop be compared to NOSQL database like Cassandra?

910

What is a rack?

419

Can you explain hadoop streaming?

420

Explain Working of MapReduce?

971

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