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 transformation in spark?

341

Can you explain spark sql?

332

What are the main components of spark?’

333

Can you explain spark streaming?

317

How rdd persist the data?

309

Can you explain accumulators in apache spark?

330

What are common spark ecosystems?

338

What are features of apache spark?

351

Explain how can apache spark be used alongside hadoop?

266

What are the types of cluster managers in spark?

294

Can you define pagerank?

304

Can you explain spark core?

282

Explain about mappartitions() and mappartitionswithindex()

340

Explain how can you minimize data transfers when working with spark?

450

Explain how can spark be connected to apache mesos?

300

Un-Answered Questions { Hadoop }

How much space will the split occupy in Mapreduce?

729

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

312

Which files are used by the startup and shutdown commands?

776

List some difference between flume and kafka?

523

Can you join multiple fields in apache pig scripts?

631

Why do we use Hadoop?

964

Explain Erasure Coding in Hadoop?

555

What are the uses and applications of mahout ?

Rack awareness of Namenode?

916

Which one would you recommend for hbase table design approach – tall-narrow or flat wide?

335

What is Combiner in MapReduce?

698

What is spark job?

361

Mention the common features in Pig and Hive?

949

How can we launch Spark application on YARN?

444

How can you delete the DBPROPERTY in Hive?

679

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