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

How will format the HDFS ?

1063

what are the steps involved in commissioning adding

909

How to use Apache Zookeeper command line interface?

1137

Can NameNode and DataNode be a commodity hardware?

1679

What are the steps to submit a Hadoop job?

906

What is the heartbeat used for?

1045

How would you tackle counting words in several text documents?

1022

What are the Basics of Hadoop?

930

Explain the shuffle?

916

How blocks are distributed among all data nodes for a particular chunk of data?

1090

How can I install Cloudera VM in my system?

958

How we can take Hadoop out of Safe Mode?

IBM,

855

What is Writable & WritableComparable interface?

927

What will be the consideration while we do Hardware Planning for Master in Hadoop architecture?

1075

What is configuration of a typical slave node on Hadoop cluster? How many JVMs run on a slave node?

1032

Un-Answered Questions { Hadoop }

What is a Block Scanner in HDFS?

What are mapreduce new and old apis while writing map reduce program?. Explain how it works

652

What is InputSplit and RecordReader?

960

What file systems Spark support?

343

How do I configure hadoop high availability (ha) for impala?

Explain how are file systems checked in hdfs?

What do you understand by hive?

681

What is a cell in hbase?

179

What is Apache Avro?

Can you explain commodity hardware?

406

What are best features of Apache Avro?

What is the role of the ZooKeeper in Kafka?

527

What is the significance of ‘IF EXISTS” clause while dropping a table?

715

What is Grunt shell?

579

What is HDFS - Hadoop Distributed File System?

962

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