In the previous recipe, we presented how to configure parameters for YARN and MapReduce. As stated initially, each daemon runs a Jetty web server, which can be accessed using a web browser.
Users must take note of the fact that their RPC ports are different from HTTP ports and must not be confused with the options we used in the previous recipe. There are default web ports such as Namenode 50070
, ResourceManager 8088
, Datanode 50075
. All these can be configured to custom ports, if needed.
Make sure that the user has a running cluster with YARN and HDFS configured. The user must be able to run MapReduce jobs on it.
Point your web browser to
http://master1.cyrus.com/8088
, to access the ResourceManager Web UI:The Web UI gives information on running the application and the resources it uses, as shown in the following screenshot:
The web interface also shows the scheduler used, which is by default capacity scheduler:
The ResourceManager...