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,

655

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,

649

Explain how RDDs work with Scala in Spark

Capital One,

335

Define HRegionServer in HBase

155

What is the use of shutdown command?

206

What is HBase HMaster?

356

What is the function of HMaster?

249

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?

157

Explian the Limitations of HBase?

185

State some applications of HBase?

167

What is a Column family in hbase?

192

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

181

Explain the Scope operators used in hbase?

180

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

209

What is the use of HColumnDescriptor class?

187

Un-Answered Questions { Big Data }

What are the functionalities of jobtracer?

390

How to start hbase services?

212

What are the port numbers of task tracker?

438

What is the relationship between Jobs and Tasks in Hadoop?

591

Explain Spark saveAsTextFile() operation?

328

When was spark introduced?

322

What do you know about transformations in spark?

276

Can you explain hadoop streaming?

388

Explain InputSplit in Hadoop MapReduce?

635

How to do ‘map’ and ‘reduce’ works?

520

Big Data Engineer Can you explain what REST is?

What do you mean by the High Availability of a NameNode in Hadoop HDFS?

Explain is it possible to search for files using wildcards?

440

Why do we need buckets?

679

Why big data?

515

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