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

Big Data Interview Questions

Questions Answers Views Company eMail

Does spark sql use hive?

254

What is the default spark executor memory?

254

What is the difference between coalesce and repartition in spark?

301

What does rdd mean?

290

How does groupbykey work in spark?

275

What is tungsten in spark?

379

What is the difference between dataframe and dataset in spark?

267

What is an accumulator in spark?

273

What is apache spark used for?

278

What is the difference between spark and scala?

333

What is accumulators and broadcast variables in spark?

310

Does spark run hadoop?

279

What is coalesce in spark sql?

287

What are the features of spark rdd?

275

What is cluster mode in spark?

297

Un-Answered Questions { Big Data }

Explain the fundamental difference between Cassandra and Hadoop?

218

How is security achieved in Apache Hadoop?

831

Explain Apache Ambari?

What is a “Distributed Cache” in Apache Hadoop?

721

What are the core components of Apache Hadoop?

710

Define a combiner?

602

What is the problem with small files in Hadoop?

488

How much faster is Apache spark than Hadoop?

269

How do Hadoop MapReduce works?

669

How to access HDFS?

Define ttl in hbase?

158

Specify the different methods of hive?

669

What is a bloom filter?

156

How can we have to see all the clusters that are available in ambari?

Explain when to use explode in Hive?

645

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