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

Knox and Hadoop Development Tools?

975

In which location Name Node stores its Metadata and why?

1425

Is a job split into maps?

1076

What are different hdfs dfs shell commands to perform copy operation?

1094

If a data Node is full how it's identified?

984

How many filters are available in HBase?

468

What are the site-specific configuration files in Hadoop?

1134

On what basis data will be stored on a rack?

1178

How is HDFS fault tolerant?

1076

How to Administering Hadoop?

952

What are the main components of a Hadoop Application?

1080

How to resolve small file problem in hdfs?

1022

what factors the block size takes before creation?

1092

Which are the two types of 'writes' in HDFS?

1267

Explain use cases where SequenceFile class can be a good fit?

987

Un-Answered Questions { Hadoop }

Mention the common features in Pig and Hive?

945

Explain the different logging levels in cassandra.

Can I do trforms or add new functionality?

How would you use Map/Reduce to split a very large graph into smaller pieces and parallelize the computation of edges according to the fast/dynamic change of data?

726

What do you understand by column family?

100

When to use secondary indexes?

What are the advantages of DataFrame?

322

What is partitioner and its usage?

746

What is the latest version of spark?

286

Explain what happens in textinformat ?

786

What is a shuffle block in spark?

291

What is Counter in MapReduce?

725

How to use combiner in hadoop ?

478

How can we create children / sub-znode?

Do I need to learn scala for spark?

323

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