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

Tell the purpose of Bloom Filter in Cassandra?

213

Name different types of primary keys in Cassandra?

Define the term Column Families?

What is the replication factor?

Clarify the NoSQL Database?

Can you explain the term, Cassandra?

102

Explain the composite key?

What is node?

Explain the commit log?

Clarify Memtable?

Clarify SSTable?

332

Query language is executed in Cassandra database. Clarify?

140

Why is Cassandra popular? Clarify.

Can Flume can distribute data to multiple destinations?

What is Flume?

112

Un-Answered Questions { Hadoop }

What is throughput? How does HDFS provide good throughput?

Name some features of Apache Cassandra?

What is difference between coalesce and repartition?

361

What is apache spark architecture?

317

What a task tracker is in hadoop?

435

Explain Hadoop Archives?

535

Suppose Hadoop spawned 100 tasks for a job and one of the task failed. What will Hadoop do?

762

Explain the core benefits for hadoop users by using the apache ambari?

Explain the role of offset in kafka?

516

What is pseudo-distributed mode?

605

What are the parameters of mappers and reducers?

489

What is difference between secondary namenode, checkpoint namenode & backupnode?

467

Mention what happens if the preferred replica is not in the ISR?

553

Describe Accumulator in detail in Apache Spark?

314

What is Hadoop Distributed File System- HDFS?

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