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Hadoop Interview Questions
Questions Answers Views Company eMail

How can I improve my spark performance?

269

What is apache spark architecture?

305

Why spark is faster than hive?

294

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

444

What is pair rdd in spark?

267

What is difference between cache and persist in spark?

265

Is bigger than spark driver maxresultsize?

286

Does spark use java?

309

How do you process big data with spark?

265

What is a spark shuffle?

316

Why do we need apache spark?

263

How do I optimize my spark code?

294

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

297

What are transformations in spark?

296

What is driver and executor in spark?

305


Un-Answered Questions { Hadoop }

What are the stable versions of Hadoop?

959


Is there an easy way to expire a session for testing?

1


What does hdfs mean?

39


did you maintain the hadoop cluster in-house or used hadoop in the cloud?

978


Why would nosql be better than using a sql database? And how much better is it?

456


What are the barriers?

5


What is hadoop? Name the main components of a hadoop application?

413


how to share the metastore within multiple users?

879


What do you understand by cassandra?

77


What does serdes mean in apache kafka?

562


What do you mean by metadata in HDFS?

55


What is the difference between dataframe and dataset in spark?

273


What happens when the data set exceeds available memory?

91


Query language is executed in Cassandra database. Clarify?

136


Is spark sql a database?

248