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

Big Data Interview Questions

Questions Answers Views Company eMail

Which company initially developed Hive ?

1 2415

What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

1105

What are the components of Hive architecture?

1112

What is HDFS Federation?

983

What are watches?

1033

Explain the Job OutputFormat?

960

Virtual Box & Ubuntu Installation?

989

What is the difference between HDFS and NAS ?

1372

How Mapper is instantiated in a running job?

993

Where do you specify the Mapper Implementation?

1016

What is the meaning of speculative execution in Hadoop? Why is it important?

1056

What is the InputFormat ?

1017

Command to format the NameNode?

935

Who is a 'user' in HDFS?

890

What is the meaning of the term "non-DFS used" in Hadoop web-console?

1308

Un-Answered Questions { Big Data }

Explain different life cycle commands in Ambari?

Why we need compression and what are the different compression format supported?

282

What is a spark rdd?

313

How can you use streams api?

538

A number of combiners can be changed or not in MapReduce?

648

What is sink processors?

Is a log flume a roller coaster?

How can we have to see the all hosts that are available in the ambari?

What is a Combiner?

740

What is difference between an input split and hdfs block?

656

Give the name of some components of Cassandra?

Define Thrift?

268

What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

444

Compare hive, hbase, and impala?

Mention what is the best way to copy files between hdfs clusters?

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