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[Bug 1180304] Re: Double healing of info_cache with cells

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Alan Pevec <1180304@xxxxxxxxxxxxxxxxxx>
Date: Thu, 08 Aug 2013 19:54:46 -0000
Reply-to: Bug 1180304 <1180304@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: nova/grizzly
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1180304

Title:
  Double healing of info_cache with cells

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) grizzly series:
  Fix Released

Bug description:
  Anytime an instance info_cache entry is updated, cells is notified.
  There's a periodic task in nova-compute that heals the info_cache.
  This happens to also heal the API cell.  But it's a duplication of
  effort that is also handled by the cells healing.  In a large
  environment, there's a lot of extra messages being sent from nova-
  compute to nova-cells which are unnecessary.

  The info_cache healing should probably be made not to notify cells.

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