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?

101

Who was the original author of Cassandra?

What are the different CQL data manipulation commands in Cassandra?

124

What is the use of tracing cqlsh command in Cassandra?

Which query language is used in Cassandra database?

106

Does Cassandra work on Windows?

What is Hector in Cassandra?

104

Which command is used to start the cqlsh prompt?

269

What is the use of Bloom Filter in Cassandra?

129

Give some important features of SPM?

101

What is prepare() method in Cassandra?

What is Cassandra?

101

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

Describe SPM?

Un-Answered Questions { Hadoop }

What is spark driver application?

281

Mention some machine learning algorithms exposed by mahout?

Which companies are mostly using Hive ?

833

Can you define rdd?

321

What counter in Hadoop MapReduce?

700

What are Actions?

332

What Is Difference Between Mapreduce and Pig ?

677

What are znodes?

if you run Hive as a server?

965

Is fs.mapr.working.dir a single directory?

718

What are the config properties of presto?

What do you mean by a bag in Pig?

1034

How to enable/configure the compression of map output data in hadoop?

829

How do you write your own custom SerDe ?

778

Which modes can Hadoop be run in? List a few features for each mode?

509

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