Bug 1344709
| Summary: | Database deadlock when creating multiple hosts in parallel | ||
|---|---|---|---|
| Product: | Red Hat Satellite | Reporter: | Lukas Zapletal <lzap> |
| Component: | Hosts | Assignee: | Chris Duryee <cduryee> |
| Status: | CLOSED DUPLICATE | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 6.2.0 | CC: | bbuckingham, cwelton, jhutar |
| Target Milestone: | Unspecified | Keywords: | Triaged |
| Target Release: | Unused | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2016-06-15 17:40:06 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Note: You may need to configure PassengerMinInstances 2 in /etc/httpd/conf.d/05-foreman-ssl.conf in order to have at least two processes that interfere each other. I believe this is the same as 1341338. There are a couple of related queries that rely on the same rails locking mechanisms. *** This bug has been marked as a duplicate of bug 1341338 *** |
Reproducer: Create several processes that create content hosts (hammer host create) in parallel. 2016-06-10 10:58:53 CEST ERROR: deadlock detected 2016-06-10 10:58:53 CEST DETAIL: Process 19805 waits for ShareLock on transaction 1661291; blocked +by process 24817. Process 24817 waits for ExclusiveLock on tuple (0,24) of relation 18010 of database 17659; +blocked by process 19805. Process 19805: UPDATE "hostgroups" SET "hosts_count" = COALESCE("hosts_count", 0) + 1 WHERE +"hostgroups"."id" = 2 Process 24817: UPDATE "hostgroups" SET "hosts_count" = COALESCE("hosts_count", 0) + 1 WHERE +"hostgroups"."id" = 2 2016-06-10 10:58:53 CEST HINT: See server log for query details. 2016-06-10 10:58:53 CEST STATEMENT: UPDATE "hostgroups" SET "hosts_count" = COALESCE("hosts_count", +0) + 1 WHERE "hostgroups"."id" = 2 2016-06-10 10:58:53 CEST ERROR: deadlock detected 2016-06-10 10:58:53 CEST DETAIL: Process 19784 waits for ShareLock on transaction 1661291; blocked +by process 24817. Process 24817 waits for ExclusiveLock on tuple (0,59) of relation 17911 of database 17659; +blocked by process 19784. Process 19784: UPDATE "operatingsystems" SET "hosts_count" = COALESCE("hosts_count", 0) - 1 +WHERE "operatingsystems"."id" = 4 Process 24817: UPDATE "operatingsystems" SET "hosts_count" = COALESCE("hosts_count", 0) + 1 +WHERE "operatingsystems"."type" IN ('Redhat') AND "operatingsystems"."id" = 4 2016-06-10 10:58:53 CEST HINT: See server log for query details. 2016-06-10 10:58:53 CEST STATEMENT: UPDATE "operatingsystems" SET "hosts_count" = +COALESCE("hosts_count", 0) - 1 WHERE "operatingsystems"."id" = 4 Looks like this is related: http://projects.theforeman.org/issues/10133 # rpm -q satellite katello foreman satellite-6.2.0-14.2.el7sat.noarch katello-3.0.0-6.el7sat.noarch foreman-1.11.0.34-1.el7sat.noarch Debug tarball (Foreman core team permissions needed to download it): http://debugs.theforeman.org/foreman-debug-0Qsen.tar.xz I am able to randomly reproduce on my own box, takes hours to hit with about 100 clients registering.