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?

328

What is the significance of Sliding Window operation?

308

Why is BlinkDB used?

301

What is the advantage of a Parquet file?

329

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

390

What do you understand by SchemaRDD?

315

How can you achieve high availability in Apache Spark?

433

Define a worker node?

455

Name a few companies that use Apache Spark in production?

325

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

323

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

271

What does the Spark Engine do?

323

How Spark uses Akka?

320

How Spark handles monitoring and logging in Standalone mode?

336

What is Hadoop serialization?

Capital One,

697

Un-Answered Questions { Hadoop }

On what basis data will be stored on a rack?

1141

What is a bloom filter?

162

Difference between Sqoop and Cassandra?

How do I start flume agent?

What was the design goal of Cassandra?

What is the FlatMap Transformation in Apache Spark RDD?

293

What is the function of "MLlib"?

308

How tables are managed in apache tajo?

Is spark faster than hadoop?

356

Can we use Ambari Python Client to use of Ambari API’s?

Describe SPM?

What do you know about nlineoutputformat?

684

Why replication is required in Kafka?

508

Explain about tablespace?

Why is output file name in Hadoop MapReduce part-r-00000?

629

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