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

Explain what you understand by speculative execution

609

Explain combiners.

637

when do reducers play their role in a mapreduce task?

616

In mapreduce what is a scarce system resource? Explain?

671

What do you understand by mapreduce?

649

Explain how mapreduce works.

618

What is an input reader in reference to mapreduce?

624

How is mapreduce related to cloud computing?

663

Define the purpose of the partition function in mapreduce framework

665

What are the various input and output types supported by mapreduce?

630

Explain task granularity

655

Explain the general mapreduce algorithm

653

What is cassandra database used for?

List out some key features of apache cassandra?

What do you understand by bloom filter in cassandra?

Un-Answered Questions { Hadoop }

Is it possible to run Spark and Mesos along with Hadoop?

275

What is HDFS High Availability?

969

What are the most commonly defined input formats in Hadoop?

1060

Explain how cassandra writes data?

Define Mem-table in Cassandra?

176

What are the types of Transformation in Spark RDD Operations?

288

What apache spark is used for?

252

When and how to create hadoop archive?

446

What is kafka in hadoop?

514

What is the utility of using Writable Comparable Custom Class in Map Reduce code?

989

What is javardd?

294

How to copy file from HDFS to local?

What is the difference between rdd and dataframe in spark?

352

What are different logging levels in cassandra?

What are the particular functionalities of Ganglia in Ambari?

For More Un-Answered { Hadoop } Questions Click Here