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 I do insert … select * into a partitioned table?

What happens if there is an error in impala?

243

Is it possible to share data files between different components?

Does if offer scaling?

Is there a dual table?

What load do concurrent queries produce on the namenode?

How can it help for avoiding costly modeling?

What is the use of expand cqlsh command in Cassandra?

What is Kundera in Cassandra?

What are the consistency levels for read operations in Cassandra?

How the read operation is performed on Cassandra node ?

102

How the write operation is performed on Cassandra node ?

What is the difference between Column and SuperColumn?

150

What do you mean by Thrift in Cassandra?

What are components of Cassandra Data Model?

Un-Answered Questions { Big Data }

Explain keys() operation in Apache spark?

334

What does the high availability of a name-node means? How is it accomplished?

415

What are Actions?

319

Can you use spark to access and analyze data stored in cassandra databases?

306

Can we load data into a view?

701

Explain Dsstream with reference to Apache Spark

391

Can you explain how do ‘map’ and ‘reduce’ work?

734

What are the different collection type in Hive?

704

What are accumulators in Apache Spark?

318

How to use hdfs put command for data transfer from flume to hdfs?

What is spark tool?

264

What are the 2 types of table in hive?

683

What is Reducer in Hadoop?

549

What is difference between regular file system and HDFS?

1056

What is connection_loss error?

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