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

When running Spark applications, is it necessary to install Spark on all the nodes of YARN cluster?

343

What is the significance of Sliding Window operation?

322

Why is BlinkDB used?

312

What is the advantage of a Parquet file?

340

What are the key features of Apache Spark that you like?

405

What do you understand by SchemaRDD?

330

How can you achieve high availability in Apache Spark?

451

Define a worker node?

470

Name a few companies that use Apache Spark in production?

345

What is the difference between persist() and cache()?

335

Which spark library allows reliable file sharing at memory speed across different cluster frameworks?

275

What does the Spark Engine do?

333

How Spark uses Akka?

332

How Spark handles monitoring and logging in Standalone mode?

347

What is Hadoop serialization?

Capital One,

748

Un-Answered Questions { Hadoop }

What if rack 2 and datanode fails?

1103

How job tracker schedules an assignment?

458

How should 'store' keyword is useful in pig scripts?

679

What is the Use of Sqoop?

What is HDFS High Availability?

1019

What are 4 v's of big data?

306

how does hdfs ensure data integrity of data blocks stored in hadoop hdfs?

What is HBase?

367

What are the main components of spark?’

331

What is a bag in pig?

676

What is apache spark for beginners?

302

What do you mean by ZNode?

what is Cassandra- CQL collections?

107

Do I need to learn scala for spark?

327

How can you minimize data transfers when working with Spark?

359

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