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Hadoop Interview Questions
Questions Answers Views Company eMail

What is HDFS block size and what did you chose in your project?

976

What is HDFS High Availability?

963

What are different types of filesystem?

1144

how can we change Replication Factor?

1021

What is Hive Present Version ?

1093

What is the purpose of Hive Driver?

1052

In which scenario Hive is good fit?

981

Can i access Hive Without Hadoop ?

1 2700

What is difference between internal and external tables in hive?

1 2428

When Hive is run in embedded mode

1881

Can you execute Hadoop dfs Commands from Hive CLI? How?

1167

List the various options available with the Hive command?

904

Why Mapreduce output written in local disk?

1001

What is identity mapper and reducer? In which cases can we use them?

1006

Is YARN a replacement of Hadoop MapReduce?

1 2020


Un-Answered Questions { Hadoop }

What is the role of a zookeeper in a kafka cluster?

542


How does one create RDDs in Spark?

278


What is the importance of — the split-by clause in running parallel import tasks in sqoop?

5


What is prepare() method in Cassandra?

77


What is Mapper in Hadoop?

556


What are impala architecture components?

66


What are Paired RDD?

315


What is difference between flume and sqoop?

196


explain apache hbase?

149


Why do we need hadoop for big data analytics?

431


What is the history of apache mahout? Once did it start?

39


What are the various input and output types supported by mapreduce?

630


Can you define a block and block scanner in hdfs?

49


What are the different composite keys in Cassandra?

71


What is pre-requisites for contributing to apache mahout ?

61