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Apache Hadoop Interview Questions
Questions Answers Views Company eMail

How can we change the split size if our commodity hardware has less storage space?

709

How is hadoop different from other data processing tools?

710

What happens in a textinputformat?

704

Can you explain how do ‘map’ and ‘reduce’ work?

767

Can we call vms as pseudos?

687

What do the master class and the output class do?

701

What does job conf class do?

704

What do you know about keyvaluetextinputformat?

637

Define a namenode?

705

Explain the hadoop-core configuration?

733

Explain the benefits of block transfer?

859

Define a task tracker?

687

Define a metadata?

696

Define a daemon?

711

Explain the core components of hadoop?

692


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Un-Answered Questions { Apache Hadoop }

What are the four characteristics of Big Data?

758


What do you understand from Node redundancy and is it exist in hadoop cluster?

1270


How a task is scheduled by a jobtracker?

715


What is yarn in hadoop?

711


How can you overwrite the replication factors in HDFS?

1278


Is hadoop the future?

689


what are the steps involved in decommissioning removing

1065


How we can take Hadoop out of Safe Mode?

892


Are Namenode and job tracker on the same host?

1488


What do slaves consist of?

708


How many instances of a jobtracker run on hadoop cluster?

683


How to configure hadoop to reuse JVM for mappers?

1230


How would you tackle counting words in several text documents?

1057


Explain the overview of hadoop history breifly?

651


How can I restart namenode?

756