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 Apache Spark Machine learning library?

320

What is the use of map transformation?

314

Explain the run-time architecture of Spark?

296

List the advantage of Parquet files?

301

Name the Spark Library which allows reliable file sharing at memory speed across different cluster frameworks.

308

Please provide an explanation on DStream in Spark.

284

List the languages supported by Apache Spark?

313

Explain the Parquet File format in Apache Spark. When is it the best to choose this?

363

Explain lineage graph

320

Is the following approach correct? Is the sqrt Of Sum Of Sq a valid reducer?

453

What is Apache Spark and what are the benefits of Spark over MapReduce?

282

What are the cases where Apache Spark surpasses Hadoop?

283

What is the bottom layer of abstraction in the Spark Streaming API ?

801

Which the fundamental data structure of Spark

311

List the advantage of Parquet file in Apache Spark?

462

Un-Answered Questions { Hadoop }

What are keywords?

Why do fires spark?

302

What is an identity mapper and identity reducer?

614

What do you understand by snitches?

Can I use impala to query data already loaded into hive and hbase?

How to enable trash/recycle bin in hadoop?

745

Can you explain record reader?

439

Is a distributed machine learning framework on top of spark?

335

Is it necessary to know java to learn hadoop?

673

What is the difference between spark and scala?

356

Explain the term memtable?

What is the relationship between apache hadoop, hbase, hive and cassandra?

By Default, how many partitions are created in RDD in Apache Spark?

306

What are core components of Flume?

102

How to change from su to cloudera?

725

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