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Hadoop Interview Questions
Questions Answers Views Company eMail

What is HDFS block size and what did you chose in your project?

 620

What is HDFS High Availability?

 711

What are different types of filesystem?

 815

how can we change Replication Factor?

 651

What is Hive Present Version ?

 798

What is the purpose of Hive Driver?

 739

In which scenario Hive is good fit?

 693

Can i access Hive Without Hadoop ?

 1 2181

What is difference between internal and external tables in hive?

 1 1390

When Hive is run in embedded mode

 1579

Can you execute Hadoop dfs Commands from Hive CLI? How?

 837

List the various options available with the Hive command?

 624

Why Mapreduce output written in local disk?

 617

What is identity mapper and reducer? In which cases can we use them?

 748

Is YARN a replacement of Hadoop MapReduce?

 1 1557

Un-Answered Questions { Hadoop }

when do reducers play their role in a mapreduce task?

360

Explain a scenario where you will be using spark streaming.

1332

What is the difference between an input split and hdfs block?

84

What are the different methods to run Spark over Apache Hadoop?

420

What is difference between reducer and combiner?

268




How to Delete directory and files recursively from HDFS?

79

What is shuffle in spark?

276

Is HDFS utilized in Cassandra? If yes, where?

46

How is hadoop different from spark?

188

What is RecordReader in a Map Reduce?

391

What is hector?

58

Explain the overview of hadoop history breifly?

365

Different ways of debugging a job in MapReduce?

804

What is the use of cassandra cql collection?

51

What is zookeeper server?

1

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