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 to write a query in Cassandra?

What is the significance of cluster class in Cassandra?

Explain how cassandra writes changed data into commitlog?

What is cluster in Cassandra data model?

What are the key points of data model of Cassandra?

What is Column Family in Cassandra?

Does cassandra support acid tractions?

Define the management tools in Cassandra?

State the differences between a node, a cluster and datacenter in Cassandra?

List the benefits of using Cassandra.

Define SSTable?

What OS Cassandra supports?

Name the management tools in Cassandra?

Is piglatin a strongly typed language? If yes, then how did you come to the conclusion?

572

What are the commonalities between pig and hive?

546

Un-Answered Questions { Hadoop }

What are the advantages of DataFrame?

279

How do I optimize my spark code?

286

Define partitioning key?

457

What are the advantages of using map side join in mapreduce?

607

How do I use spark with big data?

277

List few benefits of spark over map reduce?

273

What is Shuffling and Sorting in a MapReduce?

635

Where sorting is done on mapper node or reducer node in MapReduce?

626

What is external shuffle service in spark?

276

What are the different types of UDF's in Java supported by Apache Pig?

1006

What is spark checkpointing?

266

Explain avrostorage function?

574

Is spark better than mapreduce?

257

What is data cleansing?

423

What is graph db?

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