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Topic :: Apache Hadoop





Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What do you mean by metadata in HDFS? Where is it stored in Hadoop?

 88

How can one set space quota in Hadoop (HDFS) directory?

 28

What is a block in Hadoop HDFS? What should be the block size to get optimum performance from the Hadoop cluster?

 36

What do you mean by the High Availability of a NameNode in Hadoop HDFS?

 35

What is the difference between RDBMS with Hadoop MapReduce?

 798

How to submit extra files(jars,static files) for MapReduce job during runtime in Hadoop?

 770

What is a Speculative Execution in Hadoop MapReduce?

 653

What counter in Hadoop MapReduce?

 643

What is SequenceFileInputFormat in Hadoop MapReduce?

 627

How many Mappers run for a MapReduce job in Hadoop?

 611

How do Hadoop MapReduce works?

 722

What is a Distributed Cache in Hadoop?

 660

What is the problem with the small file in Hadoop?

 651

How many Reducers run for a MapReduce job in Hadoop?

 590

What is MapReduce in Hadoop?

 640



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1456

What are the modules that constitute the Apache Hadoop 2.0 framework?

1006

What is Apache Hadoop? Why is Hadoop essential for every Big Data application?

907

What are the core components of Apache Hadoop?

784

What is the difference between Apache Hadoop and RDBMS?

807

How is security achieved in Apache Hadoop?

909

What is Apache Hadoop?

851

What is a “Distributed Cache” in Apache Hadoop?

777

What is the problem with small files in Apache Hadoop?

783

What is Rack Awareness in Apache Hadoop?

811

Explain Erasure Coding in Apache Hadoop?

751

What is Disk Balancer in Apache Hadoop?

889

What is a speculative execution in Apache Hadoop MapReduce?

793

What are the modes in which Apache Hadoop run?

800

What is Safemode in Apache Hadoop?

735