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?

186

What is external shuffle service in spark?

210

What is spark client?

196

Which are the various data sources available in spark sql?

200

Can you run spark without hadoop?

218

What is tungsten engine in spark?

224

What is stage and task in spark?

151

What is spark execution engine?

206

Is spark sql a database?

184

Is spark distributed computing?

218

What is row rdd in spark?

201

How is rdd fault?

206

How does reducebykey work in spark?

183

What is apache spark for beginners?

199

What is deploy mode in spark?

214

Un-Answered Questions { Hadoop }

Can multiple clients write into a Hadoop HDFS file concurrently?

When we send a data to a node, do we allow settling in time, before sending another data to that node?

279

What is partitioner spark?

193

Can a partition be archived? What are the advantages and Disadvantages?

487

Elaborate on cassandra - cql?

What is Cassandra Data Modelling ?

Is Pig script case sensitive?

331

Is map like a pointer?

681

Is spark based on hadoop?

205

What is pair rdd in spark?

207

How do ‘map’ and ‘reduce’ work?

360

Why is cqlsh used?

108

Differentiate between drop and truncate in cqlsh

Explain the default level of parallelism in Apache Spark

232

How do you define a partitioning key?

323

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