Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What should be the ideal replication factor in Hadoop Cluster?

2 2376

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

770

What is a Record Reader in hadoop?

667

What is version-id mismatch error in hadoop?

737

how to share the metastore within multiple users?

617

How do you define "block" in HDFS?

621

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

1047

What is Distributed Cache?

596

What problems have you faced when you are working on Hadoop code?

695

What is HDFS - Hadoop Distributed File System?

637

What are the most commonly defined input formats in Hadoop?

730

What does /var/hadoop/pids do?

931

What is the use of Combiner?

684

what is SPF?

1202

what are Task Tracker and Job Tracker?

686


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Un-Answered Questions { Apache Hadoop }

Can you give us some more details about ssh communication between masters and the slaves?

421


How does master slave architecture in the hadoop?

398


What is safe mode in Hadoop?

674


What are the hadoop's three configuration files?

364


How Mapper is instantiated in a running job?

734






Is hadoop the future?

356


What is a Task instance in Hadoop? Where does it run?1

609


What are the two main components of ResourceManager?

737


How to enable recycle bin or trash in hadoop?

439


How a task is scheduled by a jobtracker?

384


On what basis name node distribute blocks across the data nodes?

751


Mention what is the use of Context Object?

417


What is zookeeper in hadoop?

365


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

1047


Is map like a pointer?

659