Apache Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

What should be the ideal replication factor in Hadoop Cluster?

2 2644

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

914

What is a Record Reader in hadoop?

799

What is version-id mismatch error in hadoop?

874

how to share the metastore within multiple users?

752

How do you define "block" in HDFS?

732

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

1172

What is Distributed Cache?

728

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

817

What is HDFS - Hadoop Distributed File System?

786

What are the most commonly defined input formats in Hadoop?

876

What does /var/hadoop/pids do?

1087

What is the use of Combiner?

807

what is SPF?

1318

what are Task Tracker and Job Tracker?

829

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Un-Answered Questions { Apache Hadoop }

What is the main purpose of HDFS fsck command?

1525

did you maintain the hadoop cluster in-house or used hadoop in the cloud?

838

Define a combiner?

476

Explain the features of pseudo mode?

530

What is Writable & WritableComparable interface?

769

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

720

What is Apache Hadoop?

646

On What concept the Hadoop framework works?

1010

what are the steps involved in decommissioning removing

837

What are the functionalities of jobtracker?

483

What do sorting do?

501

How to exit the vi editor?

523

How is the distance between two nodes defined in Hadoop?

1280

What does /var/hadoop/pids do?

1087

Define a daemon?

509

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