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

Big Data Interview Questions

Questions Answers Views Company eMail

What are transformations in spark?

307

What is driver and executor in spark?

316

Is spark secure?

283

What is executor memory and driver memory in spark?

286

What is the point of apache spark?

284

What is rdd map?

325

What is faster than apache spark?

283

What is spark training?

279

How many ways we can create rdd in spark?

294

How tasks are created in spark?

292

Is apache spark a tool?

272

What is difference between spark and mapreduce?

275

Who created spark?

292

How is spark fault tolerance?

399

What is cluster in apache spark?

320

Un-Answered Questions { Big Data }

How to copy a file into HDFS with a different block size to that of existing block size configuration?

Explain how do ‘map’ and ‘reduce’ works?

747

Discuss writeahead logging in Apache Spark Streaming?

326

What is the use of exists command?

240

What are file permissions in HDFS? how does HDFS check permissions for files/directory?

What operations does rdd support?

278

Can you use spark to access and analyze data stored in cassandra databases?

307

What are common spark ecosystems?

320

How many compaction types are in HBase?

181

What do you mean by Schema Resolution?

What is mapper in map reduce?

648

Name the most common Input Formats defined in Hadoop? Which one is default?

464

What is structured data?

659

Explain first() operation in Apache Spark?

299

What is a local repository and when it is useful while using ambari environment?

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