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Hadoop Interview Questions
Questions Answers Views Company eMail

Is client the end user in HDFS?

 978

Can the balancer be run while Hadoop is in use?

 975

Explain the difference between NameNode

 941

What is the utility of using Writable Comparable Custom Class in Map Reduce code?

 989

Explain about Hive Buckets with Example ?

 2 2572

What other technologies have you used in hadoop sta ck?

 984

what is difference between int and intwritable?

 1475

What is Apache Hadoop YARN?

 1456

What is a JobTracker in Hadoop? How many instances of JobTracker run on a Hadoop Cluster?

 1112

What are channel selectors?

 1029

What are the stable versions of Hadoop?

 1017

Input Split & Record Reader and what they do?

 1030

what is the default replication factor in HDFS?

 1017

What is the core of the job in MapReduce framework?

 849

How indexing is done in HDFS?

 1086

Un-Answered Questions { Hadoop }

Explain how does hadoop classpath plays a vital role in stopping or starting in hadoop daemons?

614

What is the difference between client mode and cluster mode in spark?

320

Is a distributed machine learning framework on top of spark?

333

Use of Help command in Hadoop sqoop?

5

Where can I get sample data to try?

51

how you can reduce churn in ISR? When does broker leave the ISR?

619

Define the Use of Pig?

550

Can we have different replication factor of the existing files in hdfs?

56

Define streaming access?

672

How will you list all the columns of a table using Apache Sqoop?

5

Mention what needs to be taken care while adding a column?

71

Which are the three modes in which hadoop can be run?

478

Define paired RDD in Apache Spark?

279

What are different types of filesystem?

1142

Is apache spark a framework?

275

For More Un-Answered { Hadoop } Questions Click Here