Apache Hadoop Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Apache Hadoop Interview Questions

Questions Answers Views Company eMail

What is the difference between Hadoop and Traditional RDBMS?

953

What is Partioner in hadoop? Where does it run

1019

Does Hadoop requires RAID?

985

What is the purpose of DataNode block scanner?

1009

What is a checkpoint?

1004

Did you ever ran into a lop sided job that resulted in out of memory error

1274

What is the communication channel between client and namenode/datanode?

1764

What is the difference between Gen1 and Gen2 Hadoop with regards to the Namenode?

1209

What is the problem with HDFS and streaming data like logs

1056

What is the Use of SSH in Hadoop ?

990

What infrastructure do we need to process 100 TB data using Hadoop?

1039

What is the difference between a Hadoop and Relational Database and Nosql?

1107

What is Schema on Read and Schema on Write?

939

What is the difference between traditional RDBMS and Hadoop?

1198

What is the main purpose of HDFS fsck command?

1840

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Un-Answered Questions { Apache Hadoop }

Does google use hadoop?

718

Explain why do we need hadoop?

705

Is client the end user in HDFS?

1003

What do you know about nlineoutputformat?

730

What is the sequencefileinputformat in hadoop?

755

Mention what are the data components used by Hadoop?

689

What is speculative execution in Hadoop?

1089

Is it necessary to write jobs for hadoop in the java language?

709

What is Row Key?

1027

Is hadoop a memory?

735

What infrastructure do we need to process 100 TB data using Hadoop?

1039

What is hbase in hadoop?

687

What is the difference between Hadoop and Traditional RDBMS?

953

What is a checkpoint?

1004

What is the meaning of the term "non-DFS used" in Hadoop web-console?

1345

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