Hortonworks APACHE-HADOOP-DEVELOPER dumps - 100% Pass Guarantee!

You want to understand more about how users browse your public website, such as which pages they visit prior to placing an order. You have a farm of 200 web servers hosting your website. How will you gather this data for your analysis?

A. Ingest the server web logs into HDFS using Flume.

B. Write a MapReduce job, with the web servers for mappers, and the Hadoop cluster nodes for reduces.

C. Import all users' clicks from your OLTP databases into Hadoop, using Sqoop.

D. Channel these clickstreams inot Hadoop using Hadoop Streaming.

E. Sample the weblogs from the web servers, copying them into Hadoop using curl.

You have the following key-value pairs as output from your Map task:

(the, 1)

(fox, 1)

(faster, 1)

(than, 1)

(the, 1) (dog, 1)

How many keys will be passed to the Reducer's reduce method?

A. Six

B. Five

C. Four

D. Two

E. One

F. Three

Which one of the following statements describes the relationship between the NodeManager and the ApplicationMaster?

A. The ApplicationMaster starts the NodeManager in a Container

B. The NodeManager requests resources from the ApplicationMaster

C. The ApplicationMaster starts the NodeManager outside of a Container

D. The NodeManager creates an instance of the ApplicationMaster

In a large MapReduce job with m mappers and n reducers, how many distinct copy operations will there be in the sort/shuffle phase?

A. mXn (i.e., m multiplied by n)

B. n

C. m

D. m+n (i.e., m plus n)

E. mn (i.e., m to the power of n)

You need to run the same job many times with minor variations. Rather than hardcoding all job configuration options in your drive code, you've decided to have your Driver subclass org.apache.hadoop.conf.Configured and implement the org.apache.hadoop.util.Tool interface.

Indentify which invocation correctly passes.mapred.job.name with a value of Example to Hadoop?

A. hadoop "mapred.job.name=Example" MyDriver input output

B. hadoop MyDriver mapred.job.name=Example input output

C. hadoop MyDrive 璂 mapred.job.name=Example input output

D. hadoop setproperty mapred.job.name=Example MyDriver input output

E. hadoop setproperty ("mapred.job.name=Example") MyDriver input output