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 a 'block' in HDFS?

976

What is Derby database?

902

How many Daemon processes run on a Hadoop system?

1101

What are the limitations of importing RDBMS tables into Hcatalog directly?

944

How the Client communicates with HDFS?

1062

What is NoSQL?

920

What is Row Key?

981

What is a Task instance in Hadoop? Where does it run?1

853

What does the overwrite keyword denote in Hive load statement?

1 2509

What is IdentityMapper?

1004

Why do we use Hadoop?

925

what is the typical block size of an HDFS block?

916

What is Hadoop Custom partitioner ?

1001

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1328

What stored in HDFS?

926

Un-Answered Questions { Big Data }

What is kafka message?

498

Is it possible to search for files using wildcards?

641

Does cloudera offer a vm for demonstrating impala?

Command to format the NameNode?

935

Explain ingestion in big data?

631

Difference between hbase and rdbms?

176

Explain the overview of hadoop history breifly?

623

What is BloomMapFile?

737

Why do we need rdd in spark?

286

What are file permissions in HDFS and how HDFS check permissions for files or directory?

What happens if the number of reducers is 0 in Hadoop?

481

How do you integrate spark and hive?

320

What are the main benefits of using cassandra?

How can we launch Spark application on YARN?

420

How to insert records in apache tajo?

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