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 the standalone mode in spark cluster?

271

Explain apache spark streaming? How is the processing of streaming data achieved in apache spark?

306

In what ways sparksession different from sparkcontext?

341

Explain fold() operation in spark?

309

Define sparkcontext in apache spark?

313

List out the various advantages of dataframe over rdd in apache spark?

305

What is map in apache spark?

277

Write the command to start and stop the spark in an interactive shell?

274

Define various running modes of apache spark?

282

What are the ways to run spark over hadoop?

312

What is catalyst query optimizer in apache spark?

293

What are the various types of shared variable in apache spark?

293

Define the common faults of the developer while using apache spark?

289

What is the use of spark driver, where it gets executed on the cluster?

370

What is speculative execution in spark?

322

Un-Answered Questions { Hadoop }

Is apache flume real time processing framework?

Explain the process to trigger automatic clean-up in Spark to manage accumulated metadata.

308

What are distinct operators in impala?

What is closing out ledgers?

Explain how do ‘map’ and ‘reduce’ works?

740

What is the importance of driver in hive?

714

Explain how message is consumed by consumer in Kafka?

508

What is partitioning in MapReduce?

717

Can we broadcast an rdd?

300

How to explain Bigdatadeveloper projects

590

What is the maximum number of rows in a table?

What is SerDe in Apache Hive ?

928

Difference between order by and sort by in Hive?

727

What is spark deploy mode?

313

Can you give us some examples, how Hadoop is used in real time environment?

703

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