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

Is it possible to iterate through the rows of HBase table in reverse order?

209

What is the use of HColumnDescriptor class?

187

Define catalog tables in HBase?

207

Which command is available to show the current HBase user?

154

How will you backup an HBase cluster?

142

What is the use of MasterServer?

169

Explain HBase Architecture in brief?

198

Explian the Advantages of HBase?

185

Compare HBase vs RDBMS?

155

Explain HBase Meta Table?

171

How many types of HBase Operations are there?

167

Define cell in HBase?

162

How to start hbase services?

210

Which code do we use to open the connection in Hbase?

184

What is the use of ZooKeeper?

224

Un-Answered Questions { Hadoop }

List the popular use cases of Apache Spark?

279

Is there any difference between FileSink and FileRollSink?

What is graph db? Explain with an example.

What is cluster in apache spark?

303

What are the execution modes in the apache pig?

479

What is kafka?

527

What are the relational operators available related to Grouping and joining in Pig language?

455

What happens when the data set exceeds available memory?

Explain first() operation in Apache Spark RDD?

354

What is the use of "cqlsh --version" command?

What is the use of explode in Hive?

667

Explain what is the role of the zookeeper?

467

What relational operators can we use that are related to combining and splitting in Pig language?

525

What are the limitations of importing RDBMS tables into Hcatalog directly?

903

For a Hadoop job, how will you write a custom partitioner?

621

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