Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Hadoop Interview Questions

Questions Answers Views Company eMail

What is the relationship between apache hadoop, hbase, hive and cassandra?

What do you understand by data center in cassandra?

What do you understand by column family?

What do you understand by composite type?

What are "coordinator nodes" in cassandra?

What do you understand by nosql cap theorem?

What do you understand by cql?

What do you understand by mem-table in cassandra?

What is the difference between cassandra's schema and rdbms schema?

What are the befefits of nosql over relational database?

What is hector?

Explain cassandra data model?

What is the use of "cqlsh --version" command?

What do you understand by snitches?

What do you understand by sstabl in cassandra?

Un-Answered Questions { Hadoop }

Explain join() operation in Apache Spark?

354

What is Apache Spark Machine learning library?

314

Write a Mapreduce Program for Character Count ?

1054

How can we create RDD in Apache Spark?

301

What is the benifit of Distributed cache, why can we just have the file in HDFS and have the application read it?

What are the ways in which Apache Spark handles accumulated Metadata?

353

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

971

What are the differences between hadoop 1 and hadoop 2?

434

What is a mapreduce algorithm?

643

How is NFS different from HDFS?

How would an hadoop administrator deploy various components of hadoop in production?

422

What is Pig Statistics? What are all stats classes in the Java API package available?

575

What Are Good Use Cases For Impala As Opposed To Hive Or MapReduce?

600

What is the role of the zookeeper?

How is HDFS fault tolerant?

1037

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