YARN page in the Hadoop view
The YARN page in the Hadoop view enables insights over tasks execution and corresponding resource utilization for the Hadoop YARN service.
To access the page, in the TrueSight console navigation pane, click Capacity Views > Hadoop > Hadoop View, and in the vSphere Infrastructure page, click the YARN tab.
The data in the page is categorized based on different subsystems and grouped under separate tabs. Click a tab to view the metrics for that subsystem:
|Displays a table with key performance indicators for YARN|
|Detail||Displays YARN charts over time|
Metrics per cluster are displayed in a tabular format.
By default, some columns are hidden. You can show or hide columns using the action menuthat is located next to the table title.
This topic contains the following sections:
Resource utilization and tasks statistics are displayed for each cluster.
Each row in the table represents a Hadoop cluster and displays the following metrics:
Name of the Hadoop cluster
|Distribution||Hadoop Distribution||Last Value||HADOOP_DISTRIBUTION|
|Total Vcores||Number of vCores available to YARN service||Last Value||CPU_NUM|
|Used Vcores||Vcores used by YARN||Average||CPU_UTIL * CPU_NUM|
|Total Memory||Memory available to YARN service||Last Value||TOTAL_REAL_MEM|
|Used Memory||Memory used by YARN||Average||MEM_UTIL * TOTAL_REAL_MEM|
|Running Daily Jobs||Number of jobs running in YARN||Average||APP_RUNNING|
|Total Daily Job Duration||Cumulative time YARN application were executing||Sum||APP_DURATION|
This page displays YARN information for the selected cluster under the following sections or panels:
|Section or Panel||Description|
A graphical analysis of the CPU Utilzation, Total Job Duration, Job Queue and Job Completion/Failure rate over time for the selected cluster.
|Configuration Details page||Configuration information about the YARN service.|
By following the "YARN Resources Usage" link in the Details page, a dedicated page is presented that allows the analysis of YARN pools resources distribution and utilization.
For more information, see Sorting tables in views in the TrueSight console and Using filtering options in views in the TrueSight console.