Monitoring YARN

Log in to the MapR Control System and:
  • Click Overview to view the following in the YARN pane:
    • Number of node managers, running applications, and queued jobs.
    • Memory and CPU utilization metrics.
  • Go to the service information page for YARN. The YARN information page displays the following panes:
    Summary
    Displays:
    • Total number of nodes and number of active and unhealthy nodes.
    • Allocated, pending, and reserved number of Resource Manager containers.
    Top Queues by CPU Utilization
    Displays the queues that utilize the most CPU (in percentage).
    Top Queues by Memory Consumption
    Displays the queues that consume the most memory (in percentage).
    Applications
    Displays the number of submitted, completed, running, pending, and failed applications during a selected date and time range. You can select a preset (last 15 minutes, last 1 hour, last 12 hours, last 7 days, last 30 days, last 90 days) or custom time range and zoom in (by clicking and dragging the cursor in the pane) for a more granular view.
    Resource Manager (CPU)
    The number of cores allocated and used by Resource Manager during a selected date and time range. You can select a preset (last 15 minutes, last 1 hour, last 12 hours, last 7 days, last 30 days, last 90 days) or custom time range and zoom in (by clicking and dragging the cursor in the pane) for a more granular view.
    Resource Manager (Memory)
    The amount (in MB) of memory allocated and used by Resource Manager during a selected date and time range. You can select a preset (last 15 minutes, last 1 hour, last 12 hours, last 7 days, last 30 days, last 90 days) or custom time range and zoom in (by clicking and dragging the cursor in the pane) for a more granular view.
Note: The metrics collection infrastructure must be installed during installation to visualize the metrics in the various panes. If the metrics collection infrastructure is not installed, perform an Incremental Install to install the metrics collection infrastructure.