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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

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

** Changed in: nova/ocata
       Status: New => In Progress

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

** Changed in: nova/ocata
     Assignee: (unassigned) => Matt Riedemann (mriedem)

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https://bugs.launchpad.net/bugs/1680616

Title:
  instance_get_all_by_host joins tables even if told not to

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) ocata series:
  In Progress

Bug description:
  The instance_get_all_by_host DB API will join the info_cache and
  security_groups tables even if told not to by passing in
  columns_to_join=[], which the _sync_instance_scheduler_info periodic
  task from the compute manager does.

  That is because instance_get_all_by_host doesn't pass columns_to_join
  through to _instance_get_all_query which will default to join on
  info_cache and security_groups:

  https://github.com/openstack/nova/blob/6103ec7c113121866344cdca2fbbbf7b80dfa975/nova/db/sqlalchemy/api.py#L2530

  https://github.com/openstack/nova/blob/6103ec7c113121866344cdca2fbbbf7b80dfa975/nova/db/sqlalchemy/api.py#L2513

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