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#resource-manager

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Community & Careers

Question0 answers3,150 followingPosted 19 Jun 2026, 07:31 UTC95K views2,155 votes

Missing ARIA labels and inconsistent focus order in YARN ResourceManager UI

The ResourceManager web UI should be usable with screen readers and keyboard-only navigation, but current observations show missing ARIA labels on controls like the Kill Application button and queue selection dropdown, and an irregular tab order that can skip metrics tables. These gaps persist despite community proposals to add ARIA roles, labels, and live r

Community & Careers · Editorial question

Community & Careers

Question0 answers726 followingPosted 04 Jul 2024, 16:35 UTC137.7K views2,404 votes

What default memory-overutilization threshold should YARN administrators use for alerts?

Administrators want to set up YARN Resource Manager alerts that flag container memory over‑utilization promptly while avoiding excessive notifications during normal workload spikes. The YARN Metrics2 subsystem reports container memory usage, but the documentation does not prescribe a universal default threshold; different Hadoop distributions use values rang

Community & Careers · Editorial question

yarn resource-manager memory-utilization

Tasadduq Burney

Tasadduq Burneyowner

Asked19 Jun 2026, 07:31 UTC

Level 31Owner23,025 rep points

owner

Asked04 Jul 2024, 16:35 UTC

Level 31Owner23,025 rep points