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 does heartbeat in hdfs means?

What does hdfs mean?

Would you be able to change the block size of hdfs files?

Characterize data integrity? How does hdfs ensure information integrity of data blocks squares kept in hdfs?

Does hdfs enable a customer to peruse a record, which is already opened for writing?

What is the throughput?

How does hdfs give great throughput?

Will various customers write into an hdfs record simultaneously?

Clarify the difference between nas and hdfs.

What do you mean by meta information in hdfs?

Can we change the document present in hdfs?

What does rack awareness algorithm means and why is it utilized as a part of hadoop?

430

What does rack awareness algorithm means?

488

What does the high availability of a name-node means? How is it accomplished?

415

What does name-node mean in hadoop?

475

Un-Answered Questions { Hadoop }

What Platforms Cassandra runs on?

What does the mapred.job.tracker command do?

425

Define the roles of the file system in any framework?

304

What is 'Key value pair' in HDFS?

960

What is difference between map and flatmap in spark?

322

Explain the term paired RDD in Apache Spark?

403

What is Reducer in Hadoop?

549

What is Apache Spark?

369

Explain the format of an apache kafka message?

480

Are multiline comments supported in Hive?

3284

Is bigger than spark driver maxresultsize?

296

In case of embedded Hive, can the same metastore be used by multiple users?

797

In which location Name Node stores its Metadata and why?

1393

Mention what is HiveServer2 (HS2)?

790

Explain Creating an Index?

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