[IMPALA-3134] Admission controller should not assume all backends have same proc mem limit

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Impala 2.5.0
• Fix Version/s: Impala 2.13.0, Impala 3.1.0
• Component/s: Backend
• Labels: admission-control ramp-up resource-management
• Target Version: Product Backlog
• Assignee: Bikramjeet Vig
• Reporter: Matthew Jacobs
• Created: 03/Mar/16 21:56
• Updated: 05/Jun/18 15:50
• Resolved: 23/May/18 17:25

Description

The admission policy now checks that all backends have enough available memory resources to execute the request, but it assumes that all backends share the same process mem limit as the impalad it itself is running on. In a heterogeneous environment, admission is wrong.