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

Big Data Interview Questions

Questions Answers Views Company eMail

Explain in brief what is the architecture of Spark?

314

What is Spark DataFrames?

276

In how many ways can we use Spark over Hadoop?

326

Explain Machine Learning library in Spark?

290

Explain about transformations and actions in the context of RDDs.

351

Explain the difference between Spark SQL and Hive.

392

Explain Catalyst framework?

361

What are the downsides of Spark?

356

What is the need for Spark DAG?

311

What is broadcast variable?

369

Why does the picture of Spark come into existence?

312

How can we launch Spark application on YARN?

423

Explain catalyst query optimizer in Apache Spark?

315

What are the various modes in which Spark runs on YARN? (Local vs Client vs Cluster Mode)

277

Apache Spark is a good fit for which type of machine learning techniques?

285

Un-Answered Questions { Big Data }

What is the difference between Column and SuperColumn?

150

What is Distributed Cache in the MapReduce Framework?

636

How do I download spark?

275

Define big data analytics?

535

What is map side join?

306

What are the three components of Cassandra write?

118

How to restart NameNode or all the daemons in Hadoop HDFS?

Explain the use of tasktracker in the hadoop cluster?

644

Define Partitions?

321

Different running modes for running Pig?

901

What is the latest version of ambari that is available in the market and what is the feature that they have added in it?

What is the relationship between Hadoop, HBase, Hive and Cassandra ?

149

What alternate way does HDFS provides to recover data in case a Namenode, without backup, fails and cannot be recovered?

What is a task instance in hadoop? Where does it run?

624

What is spark flatmap?

311

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