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Apache Hadoop Interview Questions
Questions Answers Views Company eMail

What is a 'block' in HDFS?

976

What is Derby database?

902

How many Daemon processes run on a Hadoop system?

1101

What are the limitations of importing RDBMS tables into Hcatalog directly?

944

How the Client communicates with HDFS?

1063

What is NoSQL?

922

What is Row Key?

981

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

853

What is IdentityMapper?

1004

Why do we use Hadoop?

925

what is the typical block size of an HDFS block?

916

What is Hadoop Custom partitioner ?

1001

What is the default block size in Hadoop 1 and in Hadoop 2? Can it be changed?

1328

What stored in HDFS?

926

What is crontab? Explain with suitable example?

1057


Post New Apache Hadoop Questions

Un-Answered Questions { Apache Hadoop }

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

663


How the Client communicates with HDFS?

1063


What are the four characteristics of Big Data?

715


Does hadoop always require digital data to process?

1181


Can hbase run without hadoop?

743


How to use Apache Zookeeper command line interface?

1137


Knox and Hadoop Development Tools?

926


Can we have multiple entries in the master files?

694


How can I install Cloudera VM in my system?

958


Define a job tracker?

701


How we can change Replication factor when Data is on the fly?

1342


What is the problem with small files in Apache Hadoop?

783


How can we check whether namenode is working or not?

659


What is the difference between hadoop and other data processing tools?

688


How can I restart namenode?

720