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 different transformation on DStream?

284

What are Paired RDD?

315

Name some sources from where Spark streaming component can process real-time data?

295

What is meant by in-memory processing in Spark?

313

Explain what are the various types of Transformation on DStream?

282

Define Partition in Apache Spark?

314

How many types of Transformation are there?

316

How you can remove the element with a critical present in any other Rdd is Apache spark?

302

What is Sparse Vector?

341

Is it possible to run Spark and Mesos along with Hadoop?

275

What is DataFrames?

372

Discuss writeahead logging in Apache Spark Streaming?

330

How can data transfer be minimized when working with Apache Spark?

297

What do you mean by Speculative execution in Apache Spark?

306

Explain about the different cluster managers in Apache Spark

336

Un-Answered Questions { Big Data }

How is dag created in spark?

289

What can be optimum value for Reducer?

959

Define Cassandra?

When does queuefullexception occur?

655

Which one would you recommend for hbase table design approach – tall-narrow or flat wide?

329

What is spark reducebykey?

268

How can we see only top 15 records from the student.txt out of100 records in the HDFS directory?

593

Explain the flatMap operation on Apache Spark RDD?

318

Is it possible to rename the output file, and if so, how?

473

Can you explain how do ‘map’ and ‘reduce’ work?

746

What is sink processors?

101

What is the communication channel between client and namenode/datanode?

1745

What is Chain Mapper?

566

Why Hadoop performs replication, although it results in data redundancy?

1285

Should the region server be located on all DataNodes?

442

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