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 needs to be taken care while adding a Column?

107

how Cassandra writes data?

137

how Cassandra writes changed data into commitlog?

105

what is Cassandra- CQL collections?

107

what is Bloom Filter is used for in Cassandra?

118

when you can use Alter keyspace?

126

what is SStable consist of?

106

How to exit the vi editor?

778

Does the hdfs client decide the input split or namenode?

717

Which files are used by the startup and shutdown commands?

777

What is cloudera and why it is used?

842

What is a spill factor with respect to the ram?

915

Can we have multiple entries in the master files?

743

On which port does ssh work?

790

Do we need to give a password, even if the key is added in ssh?

768

Un-Answered Questions { Big Data }

What is kafka message?

549

How to specify more than one directory as input to the MapReduce Job?

753

Elucidate the concept of cap theorem?

is there a standard procedure to deploy hadoop?

467

Is it necessary to write a mapreduce job in java?

671

Explain the use of File system API in Apache Spark

308

What is Shuffling and Sorting in a MapReduce?

720

How to write MapReduce Programs?

765

If map reduce is inferior to spark then is there any benefit of learning it?

302

Is apache spark part of hadoop?

322

What is the command to change the replication factor ?

553

Is hive suitable to be used for oltp systems? Why?

847

What is the reason for creating a new metastore_db whenever Hive query is run from a different directory?

1036

What does the following query do? Insert overwrite table employees partition (country, state) select ..., Se.cnty, se.st from staged_employees se;

964

What is NoSQL database?

104

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