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 Spark Core?

300

Explain the flatMap operation on Apache Spark RDD?

318

Can we run Apache Spark without Hadoop?

306

What is DStream in Apache Spark Streaming?

319

Define Partition and Partitioner in Apache Spark?

303

Explain briefly what is Action in Apache Spark? How is final result generated using an action?

309

Describe the distnct(),union(),intersection() and substract() transformation in Apache Spark RDD?

303

Define Spark-SQL?

281

Explain the repartition() operation in Spark?

287

Compare Transformation and Action in Apache Spark?

282

How does pipe operation writes the result to standard output in Apache Spark?

365

Explain how you can get exactly once messaging from kafka during data production?

521

What is combiner aggregator?

590

When do you call the cleanup method?

525

What are the key benefits of using storm for real time processing?

541

Un-Answered Questions { Big Data }

Define the use of Source Command in Cassandra?

What are the different methods to run Spark over Apache Hadoop?

716

In which kind of scenarios MapReduce jobs will be more useful than PIG in Hadoop?

644

How will you submit extra files or data ( like jars, static files, etc. ) For a mapreduce job during runtime?

654

How much is flume worth?

What is Yum?

Define ttl in hbase?

164

In which directory hadoop is installed?

405

Since the data is replicated thrice in hdfs, does it mean that any calculation done on one node will also be replicated on the other two?

Why hbase is a schema-less database?

182

What is a spill factor with respect to the ram?

863

Can spark work without hadoop?

331

What is DistributedCache and its purpose?

902

Mention what is the maximum size of the message does kafka server can receive?

535

When to use spark sql?

307

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