Jay Pipes e24798a02e Only return latest instance fault for instances
This patch addresses slowness that can occur when doing a list servers
API operation when there are many thousands of records in the
instance_faults table.

Previously, in the Instance.fill_faults() method, we were getting all
instance fault records for a set of instances having one of a set of
supplied instance UUIDs and then iterating over those faults and
returning a dict of instance UUID to the first fault returned (which
happened to be the latest fault because of ordering the SQL query by
created_at).

This patch adds a new InstanceFaultList.get_latest_by_instance_uuids()
method that does some SQL-fu to only return the latest fault records for
each instance being inspected.

Closes-Bug: #1632247

Co-Authored-By: Roman Podoliaka <rpodolyaka@mirantis.com>
Change-Id: I8f2227b3969791ebb2d04d74a316b9d97a4b1571
2016-12-14 19:25:05 +02:00
2012-02-08 19:30:39 -08:00
2010-05-27 23:05:26 -07:00
2016-08-08 10:26:08 +01:00
2016-10-12 10:02:17 -07:00
2015-09-17 16:41:48 +00:00

OpenStack Nova

OpenStack Nova provides a cloud computing fabric controller, supporting a wide variety of compute technologies, including: libvirt (KVM, Xen, LXC and more), Hyper-V, VMware, XenServer and OpenStack Ironic.

OpenStack Nova is distributed under the terms of the Apache License, Version 2.0. The full terms and conditions of this license are detailed in the LICENSE file.

API

To learn how to use Nova's API, consult the documentation available online at:

http://developer.openstack.org/api-guide/compute/ http://developer.openstack.org/api-ref/compute/

For more information on OpenStack APIs, SDKs and CLIs, please see:

http://www.openstack.org/appdev/ http://developer.openstack.org/

Operators

To learn how to deploy and configure OpenStack Nova, consult the documentation available online at:

http://docs.openstack.org

For information about the different compute (hypervisor) drivers supported by Nova, please read:

http://docs.openstack.org/developer/nova/feature_classification.html

In the unfortunate event that bugs are discovered, they should be reported to the appropriate bug tracker. If you obtained the software from a 3rd party operating system vendor, it is often wise to use their own bug tracker for reporting problems. In all other cases use the master OpenStack bug tracker, available at:

http://bugs.launchpad.net/nova

Developers

For information on how to contribute to Nova, please see the contents of the CONTRIBUTING.rst.

Any new code must follow the development guidelines detailed in the HACKING.rst file, and pass all unit tests.

Further developer focused documentation is available at:

http://docs.openstack.org/developer/nova/

Description
OpenStack resource provider inventory allocation service
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