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 are the usage of different consistency levels for write operations ?

What are the consistency levels for write operations in Cassandra?

Who was the original author of Cassandra?

What are the different CQL data manipulation commands in Cassandra?

115

What is the use of tracing cqlsh command in Cassandra?

Which query language is used in Cassandra database?

104

Does Cassandra work on Windows?

What is Hector in Cassandra?

102

Which command is used to start the cqlsh prompt?

267

What is the use of Bloom Filter in Cassandra?

125

Give some important features of SPM?

What is prepare() method in Cassandra?

What is Cassandra?

What are the differences between a node, a cluster, and datacenter in Cassandra?

Describe SPM?

Un-Answered Questions { Hadoop }

Compare Hadoop and Spark?

326

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

436

What is the difference between HDFS block and input split?

895

Explain Creating an Index?

What do you understand by the term snitch in cassandra? Give some example.

What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?

1179

What is the use of binstorage?

579

What is the maximum number of rows in a table?

How does apache flume work?

132

How a task is scheduled by a jobtracker?

682

What MapReduce framework consists of?

1110

How does an hadoop application look like or their basic components?

735

What are Features of Hive?

732

Should I install spark on all nodes of yarn cluster?

341

What is struct and explain its purpose?

520

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