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

Why do the nodes are removed and added frequently in a hadoop cluster?

508

What is a namenode?

436

Can hadoop handle streaming data?

494

What is hadoop? Name the main components of a hadoop application?

479

What do you know about yarn?

458

What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

491

What is the purpose of exploding in hive?

718

Can you list few commonly used hive services?

692

What is the difference between piglatin and hiveql?

709

How can you transfer data from hive to hdfs?

757

What is the difference between sort by and order by in hive?

719

How can you connect an application, if you run hive as a server?

756

Can you explain smb join in hive?

776

Can you define serde in hive?

733

Can you explain sqoop metastore?

Un-Answered Questions { Hadoop }

What are the two main components of ResourceManager?

1198

What are the differences between hadoop 1 and hadoop 2?

473

What kind of applications is supported by Apache Hive?

860

How is the splitting of file invoked in Hadoop ?

577

What is scala spark?

312

Is client the end user in HDFS?

1011

Explain how message is consumed by consumer in Kafka?

560

What do you know by storage and compute node?

732

What is the process of changing the split size if there is limited storage space on Commodity Hardware?

771

List some use cases of apache kafka?

526

What are the different compaction types in hbase?

183

How can you use streams api?

587

What is throughput in HDFS?

What are the different file permissions in the HDFS for files or directory levels?

159

What are shared variables in Apache Spark?

341

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