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 do you understand by Executor Memory in a Spark application?

456

Is Apache Spark a good fit for Reinforcement learning?

282

What is Catalyst framework?

275

What do you understand by Pair RDD?

375

How can you launch Spark jobs inside Hadoop MapReduce?

308

How can you compare Hadoop and Spark in terms of ease of use?

268

Which one will you choose for a project –Hadoop MapReduce or Apache Spark?

291

What do you understand by Lazy Evaluation?

358

How can you remove the elements with a key present in any other RDD?

285

How Spark uses Hadoop?

290

What is a DStream?

321

What are the various data sources available in SparkSQL?

323

Explain about the core components of a distributed Spark application?

278

What are the benefits of using Spark with Apache Mesos?

274

What are the common mistakes developers make when running Spark applications?

274

Un-Answered Questions { Hadoop }

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

What is spark reducebykey?

259

Define Partitions?

300

Can NameNode and DataNode be a commodity hardware?

1642

Can sqoop use spark?

What are the restriction to the key and value class ?

406

What is the Internal Architecture of the Cassandra Database ?

What are different types of filesystem?

1094

what is the default replication factor in HDFS?

978

What is a row in cassandra? And what are the different elements of it?

Can a spark cause a fire?

311

How can you minimize data transfers when working with Spark?

331

How do I know how many impala nodes are in my cluster?

160

Can we run spark on windows?

275

In hbase what is column families?

168

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