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?

300

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

276

Can you do real-time processing with Spark SQL?

308

Discuss the role of Spark driver in Spark application?

269

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

265

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

264

What are accumulators in Apache Spark?

306

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

470

Explain about the different types of trformations on dstreams?

286

Describe the run-time architecture of Spark?

275

What is the FlatMap Transformation in Apache Spark RDD?

279

can you run Apache Spark On Apache Mesos?

299

Describe Partition and Partitioner in Apache Spark?

284

Describe Accumulator in detail in Apache Spark?

305

List down the languages supported by Apache Spark?

283

Un-Answered Questions { Hadoop }

Is bigger than spark driver maxresultsize?

286

When to use secondary indexes?

What is replication in kafka?

494

What is the difference between external table and managed table?

916

Why do we need a password-less ssh in fully distributed environment?

688

Some of the most notable applications of Kafka?

490

What is Flume?

110

Does Apache Spark provide checkpoints?

266

What is InputSplit and RecordReader?

884

Explain the maximum size of a message that can be received by the Kafka?

679

Explain about the core components of Flume?

What are ‘maps’ and ‘reduces’?

668

What is rdd lineage graph? How is it useful in achieving fault tolerance?

299

Mention the common features in Pig and Hive?

878

What is spark rdd?

282

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