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

Big Data Interview Questions

Questions Answers Views Company eMail

How does Cassandra perform write function?

Define a column family?

Define consistency?

134

Define the use of Source Command in Cassandra?

Give key features of any NoSQL database?

106

Explain Zero Consistency?

108

Define Nodetool Utility?

What do you mean by data center in Cassandra?

When do you have to avoid secondary indexes?

What is ColumnFamily?

Explain the concept of compaction in Cassandra?

What is cluster in Cassandra?

Describe Memtable?

How the SSTable is different from other relational tables?

What is a keyspace in Cassandra?

109

Un-Answered Questions { Big Data }

explain Metadata in Namenode?

982

What do you understand by Consistency in Cassandra?

What are the features of apache mahout?

What does conf.setmapper class do?

722

Why is Spark RDD immutable?

383

If a Replica stays out of the ISR for a long time, what does it signify?

677

Is Namenode machine same as DataNode machine as in terms of hardware in Hadoop?

486

Explain the use of broadcast variables

339

What is pair rdd?

307

Can you explain the core methods of a reducer?

552

What is Directed Acyclic Graph in Apache Spark?

428

Explain apache spark streaming? How is the processing of streaming data achieved in apache spark?

320

What is shuffling and sorting in Hadoop MapReduce?

686

Some of the most notable applications of Kafka?

565

Explain the sequence of execution of all the components of MapReduce like a map, reduce, recordReader, split, combiner, partitioner, sort, shuffle.

713

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