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

Big Data Interview Questions

Questions Answers Views Company eMail

How is dag created in spark?

289

What does spark do during speculative execution?

329

What is heap memory in spark?

265

What is external shuffle service in spark?

296

What is spark client?

277

Which are the various data sources available in spark sql?

297

Can you run spark without hadoop?

322

What is tungsten engine in spark?

318

What is stage and task in spark?

226

What is spark execution engine?

370

Is spark sql a database?

263

Is spark distributed computing?

298

What is row rdd in spark?

287

How is rdd fault?

284

How does reducebykey work in spark?

255

Un-Answered Questions { Big Data }

Mention when to use Map reduce mode?

626

How can I speed up my spark?

277

What is Shuffling and Sorting in a MapReduce?

658

How to split single hdfs block into partitions rdd?

What exactly is hadoop?

691

What is accumulators and broadcast variables in spark?

328

What is the main objective of creating Cassandra?

106

What is the difference between the ZooKeeper ensemble and ZooKeeper quorum?

Which modes can Hadoop be run in? List a few features for each mode?

469

How many Daemon processes run on a Hadoop system?

1101

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

762

How much does flume cost?

Is databricks a database?

314

Explain hive udf function?

525

What are the different file permissions in the HDFS for files or directory levels?

146

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