Comment 0 for bug 1484343
Revision history for this message
| Zhenyu Zheng (zhengzhenyu) wrote Race conditions for quota_usage tabel | #0 |
© 2004
Canonical Ltd.
•
Terms of use
•
Data privacy
•
Contact Launchpad Support
•
Blog
•
Careers
•
System status
•
bbfa235
(Get the code!)
Currently, the quota usage table doesn't contain UniqueConstraint policy. Although it has locks when writing data, but nova-api allows multiple workers. Under extreme circumstance, for example: multiple api workers are trying to read and write the table at the same time, new record may be recorded to the list for the same user and same resources.