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?

214

What is the use of HColumnDescriptor class?

192

Define catalog tables in HBase?

215

Which command is available to show the current HBase user?

161

How will you backup an HBase cluster?

144

What is the use of MasterServer?

174

Explain HBase Architecture in brief?

200

Explian the Advantages of HBase?

187

Compare HBase vs RDBMS?

157

Explain HBase Meta Table?

175

How many types of HBase Operations are there?

169

Define cell in HBase?

166

How to start hbase services?

212

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

189

What is the use of ZooKeeper?

228

Un-Answered Questions { Hadoop }

What is scala and spark?

271

What is Mapper? How can we compress Mapper output in Hadoop?

519

How is 0xdata's h2o different from apache mahout ?

What is the best hardware configuration to run Hadoop?

1624

What is the difference between namenode and datanode in hadoop?

495

Is java required for spark?

291

What is the next step after Mapper or MapTask?

641

Describe coalesce() operation. When can you coalesce to a larger number of partitions? Explain.

328

how Cassandra writes changed data into commitlog?

State one best feature of Kafka?

514

Name some Complex types of Data types, Avro Supports?

Is hadoop open source?

718

What are the main components of Cassandra data models?

115

What do you understand by compute and storage nodes?

680

How message is consumed by consumer in kafka?

480

For More Un-Answered { Hadoop } Questions Click Here