You aren't by chance running with some multiple scheduler thread workers
patch are you?
** No longer affects: nova/ocata
** No longer affects: nova/pike
** Changed in: nova
Status: Confirmed => Incomplete
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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1739323
Title:
KeyError in host_manager for _get_host_states
Status in OpenStack Compute (nova):
Incomplete
Bug description:
https://github.com/openstack/nova/blob/master/nova/scheduler/host_manager.py#L674-L718
In _get_host_states, a list of all computes nodes is retrieved with a
`state_key` of `(host, node)`.
https://github.com/openstack/nova/blob/master/nova/scheduler/host_manager.py#L692
https://github.com/openstack/nova/blob/master/nova/scheduler/host_manager.py#L708
The small piece of code here removes all of the dead compute nodes
from host_state_map
https://github.com/openstack/nova/blob/master/nova/scheduler/host_manager.py#L708
However, the result is returned by iterating over all seen nodes and
using that index for host_state_map, some of which have been deleted
by the code above, resulting in a KeyError.
https://github.com/openstack/nova/blob/master/nova/scheduler/host_manager.py#L718
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