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 presto?

What are the components of presto architecture?

What are the functions of presto?

What are the config properties of presto?

What is apache tajo?

How to add column in apache tajo?

How to drop database in apache tajo?

How to insert records in apache tajo?

Explain about tajo worker configuration?

What are the window functions provided by apache tajo?

How to set property in apache tajo?

Explain tajo configuration files?

What is distinct clause in apache tajo?

What are the different data formats supported by apache tajo?

How can we launch a tajo cluster?

Un-Answered Questions { Hadoop }

What are all stats classes in the org.apache.pig.tools.pigstats package?

575

What is apache hcatalog?

732

What does rack awareness algorithm means and why is it utilized as a part of hadoop?

439

Explain when using field grouping in storm, is there any time-out or limit to known field values?

595

How multi-hop agent can be setup in Flume?

110

What is a kafka cluster?

551

What is the difference between Hiveserver1 and Hiveserver2?

811

When Namenode is down what happens to job tracker?

708

Mention what are the most common input formats defined in hadoop?

447

Explain the common input formats in hadoop?

472

Explain the use of tasktracker in the hadoop cluster?

642

Since the data is replicated thrice in hdfs, does it mean that any calculation done on one node will also be replicated on the other two?

What is hbase in hadoop?

657

What is hfile ?

291

What is RecordReader in a Map Reduce?

655

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