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Hadoop Interview Questions
Questions Answers Views Company eMail

how is a file of the size 1 GB uncompressed

 687

Is map like a pointer?

 774

What is the default replication factor?

 793

What should be the ideal replication factor in Hadoop Cluster?

 2 2644

How can one increase replication factor to a desired value in Hadoop?

 917

In Map Reduce why map write output to Local Disk instead of HDFS?

 753

What is a Record Reader in hadoop?

 801

What is version-id mismatch error in hadoop?

 876

how to share the metastore within multiple users?

 752

What is a partitioner and how the user can control which key will go to which reducer?

 738

Hive for Hadoop - Give some points?

 1 1716

How do you define "block" in HDFS?

 732

Where is the Mapper Output intermediate kay-value data stored ?

 1175

How does Mappers run method works?

 717

What are the components of Apache Pig platform?

 604

Un-Answered Questions { Hadoop }

Can Hadoop be compared to NOSQL database like Cassandra?

747

What is column store db?

64

What are the features of RDD, that makes RDD an important abstraction of Spark?

227

When is it suggested to use a combiner in a MapReduce job?

479

what does the text input format do?

631

What is DistributedCache and its purpose?

741

Where are hadoop’s configuration files located and list them?

303

Give the difference between Column and SuperColumn?

100

Is hadoop obsolete?

480

What is Hive Data Definition language?

734

What is bookkeeper?

1

what is the meaning of broker in Kafka?

401

Is Apache Spark a good fit for Reinforcement learning?

254

List the various types of "Cluster Managers" in Spark.

259

State some applications of HBase?

148

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