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

Apache Hadoop (394)
MapReduce (354)
Apache Hive (345)
Apache Pig (225)

Apache Ambari (93)
Apache HCatalog (34)
Apache HDFS Hadoop Distributed File System (214)
Apache Kafka (189)

Hadoop Interview Questions

Questions Answers Views Company eMail

Is kafka an etl tool?

267

What language is apache kafka written in?

288

What is zookeeper server?

What is the difference between map and reduce?

354

What is optimal size of a file for distributed cache?

378

What can skew the mean?

189

What is vectorized query execution?

217

What is map side join?

189

What does dag stand for?

203

What is data ingestion pipeline?

190

What is the difference between reducebykey and groupbykey?

203

What is data skew and how do you fix it?

217

Is databricks a database?

217

Is databricks an etl tool?

196

What is a databricks cluster?

281

Un-Answered Questions { Hadoop }

How to create hadoop archive?

248

What is the core of the job in MapReduce framework?

584

What is Directed Acyclic Graph(DAG)?

221

What problems can be addressed by using Zookeeper?

691

How are joins performed in impala?

What are the barriers?

What is HDFS High Availability?

719

Does Hadoop requires RAID?

664

What are the components of Hive architecture?

798

what are relational operations in pig latin?

526

Explain about mappartitions() and mappartitionswithindex()

227

What are the independent extensions that contributed to the ambari codebase?

What is parallelize in spark?

189

How multi-hop agent can be setup in Flume?

How is the splitting of file invoked in Hadoop framework?

261

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