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

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

Explain why do we need hadoop?

706

Explain the features of pseudo mode?

751

What do shuffling do?

714

Explain the basic difference between traditional rdbms and hadoop?

693

Explain what if rack 2 and datanode fails?

672

Define a job tracker?

742

Explain the features of fully distributed mode?

670

What are the characteristics of hadoop framework?

697

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

683

Explain how is hadoop different from other data processing tools?

765

Define a datanode?

687

Is secondary namenode a substitute to the namenode?

716

What is a secondary namenode?

669

What is unstructured data?

702

Explain the overview of hadoop history breifly?

651

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Un-Answered Questions { Apache Hadoop }

What is high availability in hadoop?

710

What is the function of NodeManager?

944

What is the use of combiners in the hadoop framework?

649

What is Input Split in hadoop?

1039

How to enable recycle bin in hadoop?

795

Who is a 'user' in HDFS?

935

What do you know by storage and compute node?

725

How is the option in Hadoop to skip the bad records?

981

What do you know about nlineoutputformat?

732

Why are the number of splits equal to the number of maps?

1009

How many Daemon processes run on a Hadoop system?

1131

What are watches?

1063

What is Row Key?

1030

What is HDFS - Hadoop Distributed File System?

1003

Define a task tracker?

687

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