[IMPALA-6924] Compute stats profiles should include reference to child queries

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 3.0, Impala 2.12.0
• Fix Version/s: Impala 3.2.0
• Component/s: Backend
• Labels: observability supportability
• Epic Link: Improve Impala Profile User Experience
• Epic Color: ghx-label-5
• Assignee: Thomas Tauber-Marshall
• Reporter: Tim Armstrong
• Created: 24/Apr/18 23:04
• Updated: 05/Dec/18 02:53
• Resolved: 05/Dec/18 02:53

Description

"Compute stats" queries spawn off child queries that do most of the work. It's non-trivial to track down the child queries and get their profiles if something goes wrong. We really should have, at a minimum, the query IDs of the child queries in the parent's profile and vice-versa.