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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?

 98

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

 38

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

 42

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

 41

What is the difference between RDBMS with Hadoop MapReduce?

 842

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

 813

What is a Speculative Execution in Hadoop MapReduce?

 696

What counter in Hadoop MapReduce?

 693

What is SequenceFileInputFormat in Hadoop MapReduce?

 665

How many Mappers run for a MapReduce job in Hadoop?

 649

How do Hadoop MapReduce works?

 780

What is a Distributed Cache in Hadoop?

 697

What is the problem with the small file in Hadoop?

 683

How many Reducers run for a MapReduce job in Hadoop?

 627

What is MapReduce in Hadoop?

 688



Related Topics


Un-Answered Questions { Apache Hadoop }

What is Apache Hadoop YARN?

1492

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

1042

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

956

What are the core components of Apache Hadoop?

816

What is the difference between Apache Hadoop and RDBMS?

841

How is security achieved in Apache Hadoop?

952

What is Apache Hadoop?

892

What is a “Distributed Cache” in Apache Hadoop?

811

What is the problem with small files in Apache Hadoop?

833

What is Rack Awareness in Apache Hadoop?

850

Explain Erasure Coding in Apache Hadoop?

792

What is Disk Balancer in Apache Hadoop?

940

What is a speculative execution in Apache Hadoop MapReduce?

822

What are the modes in which Apache Hadoop run?

829

What is Safemode in Apache Hadoop?

770