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 would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?

Twitter,

694

Write a Hive UDF that returns a sentiment score. For example, if good = 1, bad = -1, and average = 0, then a review of a restaurant states "Good food, bad service," your score might be 1 - 1 = 0.

LinkedIn,

684

Explain how RDDs work with Scala in Spark

Capital One,

341

Define HRegionServer in HBase

157

What is the use of shutdown command?

210

What is HBase HMaster?

360

What is the function of HMaster?

255

Suppose that your data is stored in collections, for instance, some binary data, message data or metadata is all keyed on the same value. Will you use HBase for this?

158

Explian the Limitations of HBase?

187

State some applications of HBase?

167

What is a Column family in hbase?

196

Discuss about the different tombstone markers used for deletion purposes in HBase.?

185

Explain the Scope operators used in hbase?

182

Is it possible to iterate through the rows of HBase table in reverse order?

214

What is the use of HColumnDescriptor class?

192

Un-Answered Questions { Big Data }

What are the Benefits Of Distributed Applications?

State some highlights of Ambari?

Name the filter which accepts the page size as the parameter in hbase?

184

What are file permissions in HDFS? how does HDFS check permissions for files/directory?

Explain fullOuterJoin() operation in Apache Spark?

420

What is secondary namenode?

Explain about the basic parameters of mapper and reducer function

1046

How many filters are available in HBase?

441

Mention key components of Hive Architecture?

850

Does hadoop follows the unix pattern?

427

Explain the benefits of block transfer?

823

What is the difference between an input split and hdfs block?

102

What is the purpose of dfsadmin tool?

1246

What is metadata storage service in bookkeeper?

Where is kafka used?

542

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