[MESOS-4833] Poor allocator performance with labeled resources and/or persistent volumes

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.28.0
• Component/s: allocation
• Labels: mesosphere resources
• Sprint: Mesosphere Sprint 30
• Story Points: 5
• Assignee: Neil Conway
• Reporter: Neil Conway
• Shepherd: Joris Van Remoortere
• Created: 01/Mar/16 21:34
• Updated: 26/Nov/18 12:21
• Resolved: 26/Nov/18 12:21

Description

Modifying the HierarchicalAllocator_BENCHMARK_Test.ResourceLabels benchmark from https://reviews.apache.org/r/43686/ to use distinct labels between different slaves, performance regresses from ~2 seconds to ~3 minutes. The culprit seems to be the way in which the allocator merges together resources; reserved resource labels (or persistent volume IDs) inhibit merging, which causes performance to be much worse.