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

How can multi-hop agent be set up in Flume?

118

What is Interceptor?

111

Is it possible to leverage real-time analysis of the big data collected by Flume directly? If yes, then explain how?

148

Explain the core components of Flume?

109

Explain about the different channel types in Flume. Which channel type is faster?

171

Apache Flume support third-party plugins also?

What is an Agent?

Explain about the replication and multiplexing selectors in Flume?

100

Differentiate between FileSink and FileRollSink?

107

Why are we using Flume?

Difference between Sqoop and Cassandra?

How are large objects handled in Sqoop?

How Sqoop can be used in a Java program?

How can you check all the tables present in a single database using Sqoop?

Is it possible to do an incremental import using Sqoop?

Un-Answered Questions { Hadoop }

What is the importance of — the split-by clause in running parallel import tasks in sqoop?

What are main APIs of Kafka?

683

Name different elements of JConsole?

Explain map-only job?

562

What are the different tools used for the ambari monitoring purpose?

What is inputformat in hadoop?

800

What is the difference between DAG and Lineage?

1648

Is HDFS utilized in Cassandra? If yes, where?

What is the use of explode in Hive?

770

How to perform the inter-cluster data copying work in HDFS?

Explain what is webdav in hadoop?

551

Explain the different logging levels in cassandra.

What is apache spark and what is it used for?

346

How can we create table by using command?

Illustrate a simple example of the working of MapReduce.

688

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