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

What is a bloom filter?

156

Explain what is hbase?

146

hbase support syntax structure like sql. Yes or no?

190

What happens if you alter the block size of a column family on an already occupied database?

214

Define the term thrift

132

Explain what does hbase consists of?

153

Why to use hbase?

150

Explain what happens if you alter the block size of a column family on an already occupied database?

165

Explain totuple function?

551

Explain avrostorage function?

572

How do you handle compression in pig?

523

How do you organize the pig latin statements?

538

Explain tobag function?

495

How do you run the pig scripts in local mode?

482

What is flatten in pig?

577

Un-Answered Questions { Hadoop }

Does the hdfs client decide the input split or namenode?

619

Can you explain logistic regression?

380

List the various options available with the Hive command?

848

What is spark training?

260

How can you see the list of stored jobs in sqoop metastore?

What is reduce side join in mapreduce?

561

Why comparison of types is important for MapReduce?

915

Can we say cogroup is a group of more than 1 data set?

676

What is the use of spark sql?

249

Does hadoop follows the unix pattern?

387

What is sink processors?

What is apache hcatalog?

676

What is SSTable? How is it different from other relational tables?

116

Discuss the various running mode of Apache Spark?

279

What is secondary namenode? Is it a substitute or back up node for the namenode?

For More Un-Answered { Hadoop } Questions Click Here