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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

How can I improve my spark performance?

300

What is apache spark architecture?

335

Why spark is faster than hive?

322

What happens if rdd partition is lost due to worker node failure?

473

What is pair rdd in spark?

297

What is difference between cache and persist in spark?

289

Is bigger than spark driver maxresultsize?

313

Does spark use java?

335

How do you process big data with spark?

301

What is a spark shuffle?

342

Why do we need apache spark?

296

How do I optimize my spark code?

323

What is the difference between client mode and cluster mode in spark?

343

What are transformations in spark?

327

What is driver and executor in spark?

324

Un-Answered Questions { Hadoop }

When to use Hive?

758

Explain Hive Thrift server?

727

What is the man difference between hbase and hive?

719

what is pig?

884

Can we change the data type of a column in a hive table?

736

What is Spark Dataset?

337

What is Map() operation in Apache Spark?

383

What is worker node in Apache Spark cluster?

312

What is stage and task in spark?

249

How to do ‘map’ and ‘reduce’ works?

605

What is flume instagram?

What are the hadoop configuration files at present?

523

Is it possible to rename the output file?

834

What is metadata storage service in bookkeeper?

Explain what is hbase?

158

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