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?

196

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 }

Is the hdfs block size reduced to achieve faster query results?

Is apache spark a framework?

290

Explain Apache Kafka Use Cases?

584

What is NoSQL?

966

What is hdfs block size?

How can Spark be connected to Apache Mesos?

342

What is the relation between MapReduce and Hive?

698

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

467

What are the applications of Apache ZooKeeper?

How many distinct layers are of storm’s codebase?

636

What daemons run on master nodes?

517

Discuss the precautions that are needed to take care while adding a column?

What are the different execution mode available in Pig?

1092

Explain HCatalog Create Table CLI along with its syntax?

What is the difference between Internal Table and External Table in Hive?

764

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