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 is catalyst query optimizer in apache spark?

293

What are the various types of shared variable in apache spark?

291

Define the common faults of the developer while using apache spark?

289

What is the use of spark driver, where it gets executed on the cluster?

366

What is speculative execution in spark?

321

Explain write ahead log(journaling) in spark?

266

Explain values() operation in apache spark?

495

Define the level of parallelism and its need in spark streaming?

391

Define sparksession in apache spark? Why is it needed?

275

Describe different transformations in dstream in apache spark streaming?

304

In hadoop_pid_dir, what does pid stands for?

524

What are the network requirements for hadoop?

474

What does hadoop-env.sh do?

445

Which are the three modes in which hadoop can be run?

478

Where is hadoop-env.sh file present?

484

Un-Answered Questions { Big Data }

Explain how input and output data format of the hadoop framework?

714

Why was spark created?

273

Explain Spark Executor

282

What is mahout hadoop?

Explain fullOuterJoin() operation in Apache Spark?

420

What are the two main components of ResourceManager?

1164

How does hdfs get a good throughput?

What does the Spark Engine do?

323

Give me the examples of Columnar database ?

582

Does diesel engine have spark plug?

353

What is Spark DataFrames?

274

What if rack 2 and datanode fails?

1060

Explain about the core components of a distributed Spark application?

291

How can you achieve high availability in Apache Spark?

432

What are the prime features of apache zookeeper?

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