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Hadoop Interview Questions
Questions Answers Views Company eMail

Hadoop Libraries and Utilities and Miscellaneous Hadoop Applications?

 698

What is difference between regular file system and HDFS?

 703

What is rack-aware replica placement policy?

 699

What is Hadoop?

 1 1126

Are Namenode and job tracker on the same host?

 1041

What are the limitations of Hive?

 726

Which company initially developed Hive ?

 1 1927

What is column families? What happens if you alter the block size of ColumnFamily on an already populated database?

 716

What are the components of Hive architecture?

 792

What is HDFS Federation?

 655

What are watches?

 700

Explain the Job OutputFormat?

 698

Virtual Box & Ubuntu Installation?

 625

What is the difference between HDFS and NAS ?

 962

How Mapper is instantiated in a running job?

 744

Un-Answered Questions { Hadoop }

What do you know about the case sensitivity of apache pig?

238

How does hdfs ensure information integrity of data blocks squares kept in hdfs?

17

Why are we using Flume?

51

Explain how you can improve the throughput of a remote consumer?

325

What is impala data types?

33




Can spark work without hadoop?

194

What is a "reducer" in Hadoop?

536

How to open a connection in hbase?

106

On what basis name node distribute blocks across the data nodes?

765

Explain benefits of lazy evaluation in RDD in Apache Spark?

219

What are hive operators and its types?

441

If we want to copy 10 blocks from one machine to another, but another machine can copy only 8.5 blocks, can the blocks be broken at the time of replication?

427

Is apache spark going to replace hadoop?

211

Explain how to Tune Kafka for Optimal Performance?

317

Does spark use zookeeper?

186

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