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

What is heap memory in spark?

265

What is external shuffle service in spark?

299

What is spark client?

277

Which are the various data sources available in spark sql?

297

Can you run spark without hadoop?

322

What is tungsten engine in spark?

318

What is stage and task in spark?

227

What is spark execution engine?

371

Is spark sql a database?

263

Is spark distributed computing?

298

What is row rdd in spark?

287

How is rdd fault?

284

How does reducebykey work in spark?

255

What is apache spark for beginners?

287

What is deploy mode in spark?

304

Un-Answered Questions { Hadoop }

What is the difference between external table and managed table?

967

I want to see the present working directory in UNIX from hive. Is it possible to run this command from hive?

664

Explain the composite key?

What is the role of the kafka producer api.

532

Can I learn spark without hadoop?

268

What do you understand by cluster in cassandra?

What is distinct clause in apache tajo?

Explain the master class and the output class do?

652

In HDFS, how Name node determines which data node to write on?

Which command do we use to show the version?

160

What happens if there is an error in impala?

243

What are the optimization techniques in spark?

282

Is sqoop an etl tool?

What is the difference between Pig and MapReduce?

609

What is the function of ApplicationMaster?

966

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