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

Name some internal daemons used in spark?

379

Name the two types of shared variable available in Apache Spark?

312

Explain distnct(),union(),intersection() and substract() transformation in Spark?

337

Explain Accumulator in Spark?

467

What is Speculative Execution in Apache Spark?

304

Name three data source available in SparkSQL

319

Is it possible to use Apache Spark for accessing and analyzing data stored in Cassandra databases?

315

Can you explain how you can use Apache Spark along with Hadoop?

323

Explain Dsstream with reference to Apache Spark

408

What is the role of Driver program in Spark Application?

290

Define the term ‘Lazy Evolution’ with reference to Apache Spark

316

What are the benefits of Spark lazy evaluation?

336

State the difference between Spark SQL and Hql

367

Can I run Apache Spark without Hadoop?

302

Please explain the sparse vector in Spark.

304

Un-Answered Questions { Hadoop }

How to create index statement in apache tajo?

What are impala built-in functions?

What is spark good for?

357

Name various types of Cluster Managers in Spark.

352

What ports does Cassandra use?

Can you run spark on windows?

306

Is spark and hadoop same?

282

How to change the replication factor of data which is already stored in HDFS?

Describe Partition and Partitioner in Apache Spark?

311

What are the benefits of using Spark with Apache Mesos?

301

Explain Erasure Coding in Hadoop?

547

What is Sparse Vector?

358

How do you run the pig scripts in local mode?

555

What is spooldir flume?

What platform and java version are required to run hadoop?

733

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