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 the role of Zookeeper in HBase architecture?

610

What are the different types of tombstone markers in HBase for deletion?

866

Is there any difference between HBase datamodel and RDBMS datamodel?

1092

What is Apache Flume?

108

What is difference between memory channel and file channel in flume?

How multi-hop agent can be setup in Flume?

110

Explain a common use case for Flume?

Explain about the different channel types in Flume.

What are core components of Flume?

104

Which channel type is faster in Flume?

124

What are Flume events?

How many Reducers should be configured?

194

Can we change the body of the flume event?

Does Flume provide 100% reliability to the data flow?

137

Explain about the core components of Flume?

Un-Answered Questions { Hadoop }

What does ‘jps’ command do?

727

What are the transformations in spark?

302

What are the components used in Hive query processor?

909

Whether Pig Latin language is case-sensitive or not?

717

How Hive organize the data?

774

Which command is used to run hbase shell?

176

Explain Machine Learning library in Spark?

303

What is InputFormat in Hadoop MapReduce?

720

What is the role of a zookeeper in a kafka cluster?

592

List down the segments of a hive question processor?

688

List out some common problems faced by data analyst?

490

What is Resilient Distributed Dataset (RDD) in Apache Spark? How does it make spark operator rich?

304

What is write ahead log(journaling) in Spark?

443

How can apache spark be used alongside hadoop?

1821

What are ‘reduces’?

767

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