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Big Data Interview Questions
Questions Answers Views Company eMail

What is difference between hive and hdfs?

271

What is skew data in hive?

309

Is kafka an etl tool?

179

What language is apache kafka written in?

189

What is zookeeper server?

1

What is the difference between map and reduce?

244

What is optimal size of a file for distributed cache?

269

What can skew the mean?

141

What is vectorized query execution?

165

What is map side join?

141

What does dag stand for?

135

What is data ingestion pipeline?

134

What is the difference between reducebykey and groupbykey?

138

What is data skew and how do you fix it?

159

Is databricks a database?

151


Un-Answered Questions { Big Data }

Define the consistency levels for read operations in Cassandra?

34


Is it possible to rename the output file?

366


Why lazy evaluation is good in spark?

135


what is difference between pig and sql?

1996


What is the difference between cache and persist in spark?

142






What is the use of Combiner?

583


What is a distributed cache in mapreduce framework?

253


What are the benefits of NoSQL over relational database?

74


Explain fullOuterJoin() operation in Apache Spark?

153


Explain the basic difference between traditional rdbms and hadoop?

287


Explain about the different complex data types in Pig?

290


Define Cassandra?

36


What do you mean by Schema Declaration?

52


What is mapreduce algorithm?

233


what are the basic parameters of a Mapper?

380