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 sparkContext?

303

Name various types of Cluster Managers in Spark.

353

How much faster is Apache spark than Hadoop?

307

Difference between groupByKey vs reduceByKey in Apache Spark?

483

How you can use Akka with Spark?

376

Name three features of using Apache Spark

300

How to start and stop spark in interactive shell?

362

To use Spark on an existing Hadoop Cluster, do we need to install Spark on all nodes of Hadoop?

370

How will you connect Apache Spark with Apache Mesos?

284

how will you implement SQL in Spark?

395

Why is Transformation lazy in Spark?

362

Does Hoe Spark handle monitoring and logging in Standalone mode?

288

Explain foreach() operation in apache spark?

319

What are the various functions of Spark Core?

348

What is the job of blend () and repartition () in Map Reduce?

686

Un-Answered Questions { Hadoop }

What is the difference between Hadoop and Traditional RDBMS?

961

Mention when you can use alter keyspace?

How does Cassandra write?

Is Pig script case sensitive?

646

What is spark catalyst?

340

What are the 2 types of table in hive?

726

How do I download adobe spark?

389

What is dag spark?

345

How does an hadoop application look like or their basic components?

769

On what basis Namenode will decide which datanode to write on?

1300

Where is table data stored in Apache Hive by default?

857

How do you run pig scripts on kerberos secured cluster?

585

Explain values() operation in apache spark?

534

When to use explode in Hive?

797

How to resolve small file problem in hdfs?

1029

For More Un-Answered { Hadoop } Questions Click Here