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 the driver program in spark?

279

What is spark submit?

267

How do I clear my spark cache?

255

What is a partition in spark?

344

What is spark vectorization?

301

What is off heap memory in spark?

286

What is a tuple in spark?

268

Is spark an etl?

273

How is rdd distributed?

301

What are the common transformations in apache spark?

263

What is the difference between dataset and dataframe in spark?

344

What is distributed cache in spark?

327

What is catalyst framework in spark?

296

How is dag created in spark?

266

What does spark do during speculative execution?

301

Un-Answered Questions { Hadoop }

Define Partitions?

294

What is the use of shutdown command?

202

How to debug Hadoop code?

476

What is UDF?

868

State benefits of Hadoop users by using Apache Ambari?

What is difference between spark and hadoop?

244

What are clusters in cassandra?

How often DataNode send heartbeat to NameNode in Hadoop?

501

Explain the different logging levels in cassandra.

How apache impala works with cdh?

What are the prime features of apache zookeeper?

What do you understand by unit and ()in scala?

446

What do you understand by SchemaRDD?

298

Tell me about the execution modes of Apache Pig?

509

What are different types of filesystem?

1088

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