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 user of sparkContext?

313

How is the processing of streaming data achieved in Apache Spark? Explain.

286

Can you do real-time processing with Spark SQL?

317

Discuss the role of Spark driver in Spark application?

288

What are the features of RDD, that makes RDD an important abstraction of Spark?

280

What is Apache Spark? What is the reason behind the evolution of this framework?

278

What are accumulators in Apache Spark?

318

What is the reason behind Transformation being a lazy operation in Apache Spark RDD? How is it useful?

481

Explain about the different types of trformations on dstreams?

302

Describe the run-time architecture of Spark?

282

What is the FlatMap Transformation in Apache Spark RDD?

293

can you run Apache Spark On Apache Mesos?

310

Describe Partition and Partitioner in Apache Spark?

303

Describe Accumulator in detail in Apache Spark?

314

List down the languages supported by Apache Spark?

293

Un-Answered Questions { Hadoop }

What is Hadoop streaming?

1046

Can you give us some examples, how Hadoop is used in real time environment?

703

State benefits of Hadoop users by using Apache Ambari?

Can I learn spark without hadoop?

268

explain the concept of RDD (Resilient Distributed Dataset). Also, state how you can create RDDs in Apache Spark.

411

What is difference between an input split and hdfs block?

656

What is apache presto?

What is Reducer in Hadoop?

549

How do I start a spark master?

287

What is bookkeeper?

explaine wal in hbase?

173

What are the different types of partitioners in cassandra?

What is cassandra database used for?

What is apache spark core?

305

Specify the partitions in hive?

660

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