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 role of Zookeeper in HBase architecture?

606

What are the different types of tombstone markers in HBase for deletion?

866

Is there any difference between HBase datamodel and RDBMS datamodel?

1089

What is Apache Flume?

108

What is difference between memory channel and file channel in flume?

How multi-hop agent can be setup in Flume?

110

Explain a common use case for Flume?

Explain about the different channel types in Flume.

What are core components of Flume?

100

Which channel type is faster in Flume?

122

What are Flume events?

How many Reducers should be configured?

180

Can we change the body of the flume event?

Does Flume provide 100% reliability to the data flow?

137

Explain about the core components of Flume?

Un-Answered Questions { Hadoop }

How to create table in hbase?

169

What is executor memory and driver memory in spark?

286

What are different Hive commands available for hive and beeline CLI?

725

Is it legal to set the number of reducer task to zero? Where the output will be stored in this case?

662

Where is the output of Mapper written in Hadoop?

772

Compare hbase & cassandra?

160

How can you achieve high availability in Apache Spark?

433

Explain the operation reduce() in Spark?

288

What is Replication Factor in Cassandra?

What is the sequencefileinputformat in hadoop?

713

Can the name of a view be same as the name of a hive table?

762

What are the operating systems supported by Apache Ambari?

Explain what is storage and compute nodes?

512

What is the current version of Hive?

766

What is the difference between apache mahout and cloudera oryx ?

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