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

Can you explain combiner?

478

List of some best tools that can be useful for data-analysis?

470

What is the best practice to deploy the secondary name node?

494

What are the tools used in big data?

476

Can you explain indexing?

472

Can you define a checkpoint?

529

Which language is more suitable for text analytics? R or python?

486

Can you explain commodity hardware?

457

How can native libraries be included in yarn jobs?

522

How to do ‘map’ and ‘reduce’ works?

610

Can you explain bloommapfile.

508

Why is checkpointing important in hadoop?

506

What happens when two clients try to access the same file in the hdfs?

505

What do you know about the speculative execution?

499

What are the differences between hadoop 1 and hadoop 2?

473

Un-Answered Questions { Hadoop }

Why spark is faster than hive?

322

Does Cassandra work on Windows?

Why do we need spark?

294

Explain ALTER Table statement in Hive?

770

What is Apache Hadoop?

900

How to keep HDFS cluster balanced?

1138

What are shared variables in spark?

321

Define compaction in HBase?

168

What are producers in kafka?

556

Explain the Reducer's reduce phase?

1117

List out some key features of apache cassandra?

What is Zookeeper Cluster?

What are the benefits yarn brings in to hadoop?

469

What is the InputFormat ?

1066

What are the relational operators available related to loading and storing in pig language?

665

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