hadoopbiggdata

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1 point

What is the intermediate output of mappers?

Key Value Pairs

Intermediate Key Value Pairs

All of the above

A list of intermediate key value pairs

1 point

What is the secondary namenode used for?

backup namenode

names the node....

checkpointing

second namenode

3 points

Name the YARN Daemons

Tasktracker

Resource Manager

Jobtracker

Application Master

Application Job

Node Manager

Resource Tracker

1 point

Rate the class

Anything less and you get a lower grade, ;-)

All of above

5 points

What are the five requirements for a new approach to distributed computing?

2 points

what are two components of hadoop?

1 point

In the shuffle and sort when do the reducer start processing?

when one reducer starts

when all mappers have finished

As soon as the first mapper finishes

when all reducers talks to mappers

1 point

What is Data Localization?

1 point

What is speculative execution?

jobtracker and tasktracker contends for resources

jobtracker will run another task if it sees as one of the tasks are too slow

jobtracker runs too fast

tasktracker runs for as long as possible

10.

1 point

What is a typical block size limit?

64,128,256

128,256

32,512

32,64,86

11.

1 point

Which hadoop MR1 daemons are affected by YARN?

Jobtracker

Secondary Namenode

Datanode Namenode

Tasktracker

Namenode

12.

5 points

Name the 5 hadoop daemons

13.

1 point

What is the command for making a sub directory called bigg-data in the home directory?

14.

1 point

The combiner reduces the mapper?

True

False

15.

2 points

Hadoop was based on what 2 papers

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