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?

122

what is SStable consist of?

How to exit the vi editor?

732

Does the hdfs client decide the input split or namenode?

668

Which files are used by the startup and shutdown commands?

720

What is cloudera and why it is used?

797

What is a spill factor with respect to the ram?

865

Can we have multiple entries in the master files?

694

On which port does ssh work?

738

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

727

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

712

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

683

How can we look for the namenode in the browser?

717

What do slaves consist of?

667

How can we check whether namenode is working or not?

659

Un-Answered Questions { Hadoop }

Types of Data Flow in Flume?

111

What is Zookeeper Cluster?

What is flume and sqoop?

107

What main configuration parameters are specified in mapreduce?

676

What is the best practice to deploy the secondary name node?

454

If a data Node is full how it's identified?

937

Explain write ahead log(journaling) in spark?

266

What is the benefit of kafka?

510

What is spark shuffle service?

336

In hbase what is column families?

174

State the difference between Spark SQL and Hql

355

Can you list down the limitations of using Apache Spark?

313

What are the drawbacks of Apache Spark?

317

How to Delete directory and files recursively from HDFS?

Explain hbasestorage function?

597

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