yahoo-eng-team team mailing list archive

[Matt Riedemann <mriedem.os@xxxxxxxxx>]

Note that the scatter/gather routine when fetching services from the
HostAPI was already backported to pike:

https://review.opendev.org/#/q/I90b488102eb265d971cade29892279a22d3b5273

** Also affects: nova/queens
   Importance: Undecided
       Status: New

** Also affects: nova/rocky
   Importance: Undecided
       Status: New

** Also affects: nova/stein
   Importance: Undecided
       Status: New

** Changed in: nova/stein
   Importance: Undecided => Medium

** Changed in: nova/stein
       Status: New => Confirmed

** Changed in: nova
   Importance: High => Medium

** Changed in: nova/rocky
       Status: New => Confirmed

** Changed in: nova/rocky
   Importance: Undecided => Medium

** Changed in: nova/queens
   Importance: Undecided => Medium

** Changed in: nova/queens
       Status: New => Confirmed

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1801897

Title:
  List AVZs can take several seconds

Status in OpenStack Compute (nova):
  In Progress
Status in OpenStack Compute (nova) queens series:
  Confirmed
Status in OpenStack Compute (nova) rocky series:
  Confirmed
Status in OpenStack Compute (nova) stein series:
  Confirmed

Bug description:
  Getting the list of AVZs can take several seconds (~30 secs. in our case)
  This is noticeable in Horizon when creating a new instance because the user can't select an AVZ until this completes.

  workflow:
  - get all services from all cells (~10000 for us)
  - fetch all aggregates which are tagged as an AVZ
  - construct a dict of {'service['host']: avz.value}
  - return a dict of {'avz_value': list of hosts}
  - separate available and not available zones.

  Reproducible in Queens, Rocky

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