Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
Red Hat Satellite engineering is moving the tracking of its product development work on Satellite to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "Satellite project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs will be migrated starting at the end of May. If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "Satellite project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/SAT-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
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.
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.