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?

206

What is the use of HColumnDescriptor class?

184

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 }

What is the difference between leader and follower in kafka?

522

What is apache ambari?

110

What is spark table?

235

How can an application connect to Hive run as a server?

1110

Define NoSQL Database?

We have already sql then why nosql?

389

How can you use producer api code?

480

What is the difference between TextinputFormat and KeyValueTextInputFormat class?

472

What is a shuffle block in spark?

252

How sparksql is different from hql and sql?

472

Clarify the difference between nas and hdfs.

What is the difference between HDFS and NAS ?

1319

What is the difference between logical and physical plans?

523

What is shuffling and sorting in mapreduce?

612

How can we assure that the values regarding a particular key goes to the same reducer?

578

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