** Changed in: nova
Status: Incomplete => Invalid
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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1291637
Title:
memcache client race
Status in OpenStack Identity (Keystone):
Expired
Status in OpenStack Compute (Nova):
Invalid
Bug description:
Nova uses thread-unsafe memcache client objects in multiple threads.
For instance, nova-api's metadata WSGI server uses the same
nova.api.metadata.handler.MetadataRequestHandler._cache object for
every request. A memcache client object is thread unsafe because it
has a single open socket connection to memcached. Thus the multiple
threads will read from & write to the same socket fd.
Keystoneclient has the same bug. See https://bugs.launchpad.net
/python-keystoneclient/+bug/1289074 for a patch to fix the problem.
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