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 difference between leader and follower in kafka?

560

Please explain apache kafka?

534

What is kafka message?

500

In which language apache kafka is written?

534

Explain the format of an apache kafka message?

481

Explain what do you understand by cassandra- cql collections?

Explain the various types of partitioners in cassandra?

Differentiate between the terms: node, a cluster, and data center in cassandra?

What do you mean by column family?

What do you mean by ss table and explain how it is different from the other original tables?

Explain how it is different from the other original tables?

Explain the concept of cassandra data model?

114

Explain the memtable in cassandra?

What do you understand by cassandra?

What do you understand by the term snitch in cassandra?

Un-Answered Questions { Hadoop }

Explain what is hadoop?

434

What is Starvation scenario in spark streaming?

346

Can we run spark without hadoop?

291

Why Hadoop performs replication, although it results in data redundancy?

1280

When to use –target-dir and when to use –warehouse-dir while importing data?

How do we represent data in Spark?

357

What is data ingestion pipeline?

321

How do you categorize a big data?

779

Who is intended audience to learn HCatalog?

Which language is not supported by spark?

335

Explain how HDFS communicates with Linux native file system?

Explain what does the conf.setmapper class do?

612

Should we use RAID in Hadoop or not?

1058

What happens in text format?

437

How do you write your own custom SerDe ?

739

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