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

Big Data Interview Questions

Questions Answers Views Company eMail

List some commonly used Machine Learning Algorithm Apache Spark?

291

What is the command to start and stop the Spark in an interactive shell?

313

List out the ways of creating RDD in Apache Spark?

289

What are the various advantages of DataFrame over RDD in Apache Spark?

308

What is flatmap in apache spark?

326

What is the standalone mode in spark cluster?

269

Explain apache spark streaming? How is the processing of streaming data achieved in apache spark?

306

In what ways sparksession different from sparkcontext?

339

Explain fold() operation in spark?

309

Define sparkcontext in apache spark?

313

List out the various advantages of dataframe over rdd in apache spark?

305

What is map in apache spark?

277

Write the command to start and stop the spark in an interactive shell?

274

Define various running modes of apache spark?

282

What are the ways to run spark over hadoop?

312

Un-Answered Questions { Big Data }

What is spark sqlcontext?

300

When application is on high latency (high response time)?

789

Where is kafka used?

542

Why spark is faster than hive?

303

If you run a select * query in hive, why does it not run mapreduce?

743

What is the difference between apache mahout and apache spark’s mllib?

Hdfs stores data using commodity hardware which has higher chances of failures. So, how hdfs ensures the fault tolerance capability of the system?

Explain ALTER Table statement in Hive?

707

Can NameNode and DataNode be a commodity hardware?

1679

Do we need to install scala for spark?

311

What does a Spark Engine do?

325

Can you use Spark to access and analyse data stored in Cassandra databases?

372

Describe how hbase uses zookeeper?

Ideally what should be the replication factor in hadoop?

425

Can you explain clustering in mahout?

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