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 Schema on Read and Schema on Write?

957

How to overwrite an existing output file during execution of mapreduce jobs?

MRO,

1137

Write a Pig UDF Example ?

817

What is the difference between traditional RDBMS and Hadoop?

1210

What is the main purpose of HDFS fsck command?

1857

What is safe mode in Hadoop?

1017

Detail description of the Reducer phases?

917

What is MapFile?

1003

What do you understand from Node redundancy and is it exist in hadoop cluster?

1279

What is HBase?

367

What happens to a NameNode that has no data?

1625

What is a Hive Metastore?

1 2111

How can an application connect to Hive run as a server?

1217

What is a heartbeat in HDFS?

979

What are sink processors?

949

Un-Answered Questions { Big Data }

Does google use spark?

290

Explain how big is ‘big data’?

595

What bit version that ambari needs and also list out the operating systems that are compatible?

What is closing out ledgers?

What is the purpose of textinputformat?

747

What are the file formats supported by spark?

315

Can you define udf?

481

I want to see the present working directory in UNIX from hive. Is it possible to run this command from hive?

712

What are the 2 modes used to run pig scripts?

651

What is cluster in apache spark?

335

What is the Internal Architecture of the Cassandra Database ?

Suppose that your data is stored in collections, for instance, some binary data, message data or metadata is all keyed on the same value. Will you use HBase for this?

162

Which spark library allows reliable file sharing at memory speed across different cluster frameworks?

275

What is the difference between DAG and Lineage?

1650

Where are Hadoop’s configuration files located?

552

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