You are working on a project where you need to chain together MapReduce, Pig jobs. You
also need the ability to use forks, decision points, and path joins. Which ecosystem project
should you use to perform these actions?

Which process instantiates user code, and executes map and reduce tasks on a cluster
running MapReduce v2 (MRv2) on YARN?

Cluster Summary: 45 files and directories, 12 blocks = 57 total. Heap size is 15.31
MB/193.38MB(7%) Refer to the above screenshot. You configure a Hadoop cluster with
seven DataNodes and on of your monitoring UIs displays the details shown in the exhibit.
What does the this tell you?

Which two features does Kerberos security add to a Hadoop cluster?

Assuming a cluster running HDFS, MapReduce version 2 (MRv2) on YARN with all settings
at their default, what do you need to do when adding a new slave node to cluster?

Which YARN daemon or service negotiations map and reduce Containers from the
Scheduler, tracking their status and monitoring progress?

During the execution of a MapReduce v2 (MRv2) job on YARN, where does the Mapper
place the intermediate data of each Map Task?

You suspect that your NameNode is incorrectly configured, and is swapping memory to
disk. Which Linux commands help you to identify whether swapping is occurring?

On a cluster running CDH 5.0 or above, you use the hadoop fs –put command to write a
300MB file into a previously empty directory using an HDFS block size of 64 MB. Just after
this command has finished writing 200 MB of this file, what would another use see when
they look in directory?

Which command does Hadoop offer to discover missing or corrupt HDFS data?