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

Is hbase an os independent approach?

196

How can you make sure of logical grouping of cells in the hbase?

207

Mention how many operational commands in hbase?

297

What is the role of zookeeper in hbase?

187

When should you use a reducer?

684

Can you tell us how many daemon processes run on a hadoop system?

640

Difference between mapreduce and spark

741

What is identity mapper and identity reducer?

693

What is heartbeat in hdfs? Explain.

746

What is identity mapper and chain mapper?

720

Name job control options specified by mapreduce.

759

What is heartbeat in hdfs?

708

What is difference between an input split and hdfs block?

708

How do reducers communicate with each other?

733

How does inputsplit in mapreduce determines the record boundaries correctly?

691

Un-Answered Questions { Hadoop }

What is Apache Spark? What is the reason behind the evolution of this framework?

294

Does Hoe Spark handle monitoring and logging in Standalone mode?

288

What are the presto applications?

When is it not recommended to use MapReduce paradigm for large

696

What is MapReduce in Hadoop?

697

What does meta-store means in hive?

771

Explain various cluster manager in Apache Spark?

405

How to Rename a table in Hive

799

What are Replication Tool and its types?

606

What are the differences between relational databases and impala?

Can you tell us how many daemon processes run on a hadoop system?

640

Define the run-time architecture of Spark?

295

Where is rdd stored?

327

How much is flume worth?

Why are the number of splits equal to the number of maps?

1014

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