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

Big Data Interview Questions

Questions Answers Views Company eMail

Define NoSQL Database?

What Platforms Cassandra runs on?

Give some advantages of Cassandra?

What is the use of “void close()” method?

What are the collection data types provided by CQL?

What is the use of “ResultSet execute(Statement statement)” method?

What do you mean by consistency in Cassandra?

186

Give the data storage units in Cassandra?

What is data replication in Cassandra?

When can you use ALTER KEYSPACE?

What is the concept of SuperColumn in Cassandra?

How many types of tunable consistency are supported in Cassandra?

Mention what are the values stored in the Cassandra Column?

What do you understand by Consistency in Cassandra?

How many types of NoSQL databases are there?

143

Un-Answered Questions { Big Data }

Can you list some useful zookeeper tools?

What language is apache kafka written in?

534

How can we kill a topology?

546

Can we do online transactions(oltp) using hadoop?

669

Explain what are the tools used in Big Data?

124

What are broker configs?

531

What are the problems with Hadoop 1.0?

1048

What is Hive ?

992

What are the various data sources available in SparkSQL?

333

What is accumulator?

319

What do you understand by mapreduce?

647

What do you understand about yarn?

285

What are the configuration files in Hadoop?

541

What are the the issues associated with the map and reduce slots based mechanism in mapReduce?

645

Which are the two types of 'writes' in HDFS?

1219

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