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?

218

What is the use of HColumnDescriptor class?

196

Define catalog tables in HBase?

218

Which command is available to show the current HBase user?

167

How will you backup an HBase cluster?

149

What is the use of MasterServer?

178

Explain HBase Architecture in brief?

210

Explian the Advantages of HBase?

191

Compare HBase vs RDBMS?

163

Explain HBase Meta Table?

179

How many types of HBase Operations are there?

175

Define cell in HBase?

168

How to start hbase services?

216

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

191

What is the use of ZooKeeper?

232

Un-Answered Questions { Hadoop }

Explain the process to trigger automatic clean-up in Spark to manage accumulated metadata.

325

What is the maximum size of a message that can be received by the kafka?

585

What is a partitioner and how the user can control which key will go to which reducer?

1003

How to enable buckets in Hive?

994

What are the best features of impala?

What are the different tasks we can perform managing host using ambari host tab?

What is distributed copy (distcp)?

521

List out the ways of creating RDD in Apache Spark?

300

What is a keyspace in Cassandra?

106

What is the importance of dfs.namenode.name.dir in HDFS?

When to use coalesce and repartition in spark?

342

Which files are used by the startup and shutdown commands?

770

What is the utilization of hcatalog?

720

If a Replica stays out of the ISR for a long time, what does it signify?

667

How much faster is Apache spark than Hadoop?

307

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