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?

276

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

261

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

270

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

324

What is speculative execution in spark?

303

Explain write ahead log(journaling) in spark?

251

Explain values() operation in apache spark?

467

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

374

Define sparksession in apache spark? Why is it needed?

259

Describe different transformations in dstream in apache spark streaming?

282

In hadoop_pid_dir, what does pid stands for?

473

What are the network requirements for hadoop?

447

What does hadoop-env.sh do?

403

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

413

Where is hadoop-env.sh file present?

443

Un-Answered Questions { Big Data }

What is skew data in hive?

654

What are the main features of impala?

How do I start a spark master?

271

What is Yum?

What is difference between an input split and hdfs block?

603

Do I need to know scala to learn spark?

340

What is the default file format to import data using Apache Sqoop?

Mention if we can name view same as the name of a Hive table?

636

What are the components of a flume agent?

Mention how many operational commands in hbase?

286

Can aluminum cause a spark?

296

What is the roadmap for apache driver version one.0?

Explain what is speculative execution?

386

Why do we need a new framework for handling big data?

577

What is the difference between cassandra's schema and rdbms schema?

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