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 2981

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

1078

What is a Record Reader in hadoop?

909

What is version-id mismatch error in hadoop?

1015

how to share the metastore within multiple users?

872

How do you define "block" in HDFS?

853

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

1306

What is Distributed Cache?

853

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

926

What is HDFS - Hadoop Distributed File System?

914

What are the most commonly defined input formats in Hadoop?

1019

What does /var/hadoop/pids do?

1213

What is the use of Combiner?

929

what is SPF?

1466

what are Task Tracker and Job Tracker?

997

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Un-Answered Questions { Apache Hadoop }

What are the different types of Znodes?

939

Have you ever used Counters in Hadoop. Give us an example scenario?

1017

What is a spill factor with respect to the ram?

812

How to Administering Hadoop?

864

What is Hadoop Custom partitioner ?

950

Mention what is the number of default partitioner in Hadoop?

638

What are different hdfs dfs shell commands to perform copy operation?

1010

What is difference between split and block in hadoop?

1347

What is a heartbeat in HDFS?

881

Is client the end user in HDFS?

941

Explain InputFormat?

966

Which are the two types of 'writes' in HDFS?

1167

Explain the hadoop configuration files at present?

624

What are combiners and its purpose?

882

Is it possible to provide multiple inputs to hadoop? If yes, explain.

614

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