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

when you can use Alter keyspace?

124

what is SStable consist of?

106

How to exit the vi editor?

774

Does the hdfs client decide the input split or namenode?

715

Which files are used by the startup and shutdown commands?

770

What is cloudera and why it is used?

835

What is a spill factor with respect to the ram?

912

Can we have multiple entries in the master files?

738

On which port does ssh work?

790

Do we need to give a password, even if the key is added in ssh?

767

What are the port numbers of namenode, job tracker and task tracker?

753

Is fs.mapr.working.dir a single directory?

718

How can we look for the namenode in the browser?

752

What do slaves consist of?

711

How can we check whether namenode is working or not?

701

Un-Answered Questions { Hadoop }

What are the four modules that make up the Apache Hadoop framework?

593

Can MapReduce program be written in any language other than Java?

970

Is spark streaming real time?

295

Why is Hive not suitable for OLTP systems?

811

What is Spark SQL?

325

What stored in HDFS?

969

Does hadoop install spark?

304

How to compress mapper output in Hadoop?

734

What is the abstraction of Spark Streaming?

275

What is spark machine learning?

281

What is the use of binstorage?

599

Can you use spark to access and analyze data stored in cassandra databases?

325

What are the views in Hive?

695

How can I improve my spark performance?

301

What is sample Query in Hive?

738

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