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 can you identify whether a given operation is transformation or action?

271

Explain the use of broadcast variables

317

How do you parse data in xml? Which kind of class do you use with java to pass data?

307

Explain sortbykey() operation?

292

List various commonly used machine learning algorithm?

373

What are the ways in which one can know that the given operation is transformation or action?

281

Describe join() operation. How is outer join supported?

289

What is the method to create a data frame?

317

On what all basis can you differentiate rdd, dataframe, and dataset?

302

How can you manually partition the rdd?

301

How to create an rdd?

300

What is an rdd?

310

Explain the top() and takeordered() operation?

327

What are the major features/characteristics of rdd (resilient distributed datasets)?

307

What is the difference between map and flatmap?

305

Un-Answered Questions { Big Data }

How to enable recycle bin in hadoop?

766

Is there any difference between HBase datamodel and RDBMS datamodel?

1089

Is ambari python clients can be used to make the good use of ambari api’s?

What is the difference between HDFS block and input split?

887

Does cassandra support acid tractions?

What is the function of "MLlib"?

308

What is ZooKeeper?

What are the limitations of Hive?

1036

What happen if a datanode loses network connection for a few minutes?

589

Which the fundamental data structure of Spark

306

Can you explain data versioning?

172

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

282

How can client interact with Hive?

700

Give the differences between the different types of primary keys in cassandra?

How to change the column data type in hive? Explain rlike in hive.

701

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