[IMPALA-10424] Fix race on not_admitted_reason in AdmissionController

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 4.0.0
• Fix Version/s: Impala 4.0.0
• Component/s: Backend
• Epic Color: ghx-label-5
• Assignee: Thomas Tauber-Marshall
• Reporter: Thomas Tauber-Marshall
• Created: 05/Jan/21 21:31
• Updated: 07/Jan/21 23:31
• Resolved: 07/Jan/21 23:31

Description

QueueNode::not_admitted_reason can be accessed concurrently by the coordinator thread that calls SubmitForAdmission and the admission control dequeue loop thread.