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,

730

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,

734

Explain how RDDs work with Scala in Spark

Capital One,

352

Define HRegionServer in HBase

161

What is the use of shutdown command?

214

What is HBase HMaster?

362

What is the function of HMaster?

276

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?

162

Explian the Limitations of HBase?

199

State some applications of HBase?

173

What is a Column family in hbase?

200

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

191

Explain the Scope operators used in hbase?

186

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

218

What is the use of HColumnDescriptor class?

198

Un-Answered Questions { Big Data }

What is hadoop sqoop?

What is Spark SQL?

325

While starting hadoop services, datanode service is not running?

492

What is project tungsten in spark?

314

Where can I find impala documentation?

Explain Working of MapReduce?

1036

Explain the features of pseudo mode?

756

How blocks are distributed among all data nodes for a particular chunk of data?

1158

Is avro supported?

How is Flume-NG different from Flume 0.9?

How many instances of a jobtracker run on hadoop cluster?

688

What is a DStream?

333

When should you use sequencefileinputformat?

717

Explain NameNode and DataNode in HDFS?

How many types of ambari repositories are available?

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