Bug 1291507

Description of problem:
Reduce the amount of repeated SQL queries made against the Monitor -> tasks page

Version-Release number of selected component (if applicable):

Installed Packages

candlepin-0.9.49.9-1.el7.noarch
candlepin-common-1.0.22-1.el7.noarch
candlepin-guice-3.0-2_redhat_1.el7.noarch
candlepin-scl-1-5.el7.noarch
candlepin-scl-quartz-2.1.5-6.el7.noarch
candlepin-scl-rhino-1.7R3-3.el7.noarch
candlepin-scl-runtime-1-5.el7.noarch
candlepin-selinux-0.9.49.9-1.el7.noarch
candlepin-tomcat-0.9.49.9-1.el7.noarch
elasticsearch-0.90.10-7.el7.noarch
katello-2.2.0.16-1.el7sat.noarch
katello-certs-tools-2.2.1-1.el7sat.noarch
katello-common-2.2.0.16-1.el7sat.noarch
katello-debug-2.2.0.16-1.el7sat.noarch
katello-default-ca-1.0-1.noarch
katello-installer-2.3.20-1.el7sat.noarch
katello-installer-base-2.3.20-1.el7sat.noarch
katello-server-ca-1.0-1.noarch
katello-service-2.2.0.16-1.el7sat.noarch
libqpid-dispatch-0.4-10.el7.x86_64
pulp-docker-plugins-0.2.5-1.el7sat.noarch
pulp-katello-0.5-1.el7sat.noarch
pulp-nodes-common-2.6.0.17-1.el7sat.noarch
pulp-nodes-parent-2.6.0.17-1.el7sat.noarch
pulp-puppet-plugins-2.6.0.17-1.el7sat.noarch
pulp-puppet-tools-2.6.0.17-1.el7sat.noarch
pulp-rpm-plugins-2.6.0.17-1.el7sat.noarch
pulp-selinux-2.6.0.17-1.el7sat.noarch
pulp-server-2.6.0.17-1.el7sat.noarch
python-gofer-qpid-2.6.6-2.el7sat.noarch
python-isodate-0.5.0-4.pulp.el7sat.noarch
python-kombu-3.0.24-10.pulp.el7sat.noarch
python-pulp-bindings-2.6.0.17-1.el7sat.noarch
python-pulp-common-2.6.0.17-1.el7sat.noarch
python-pulp-docker-common-0.2.5-1.el7sat.noarch
python-pulp-puppet-common-2.6.0.17-1.el7sat.noarch
python-pulp-rpm-common-2.6.0.17-1.el7sat.noarch
python-qpid-0.30-6.el7.noarch
python-qpid-qmf-0.30-5.el7.x86_64
qpid-cpp-client-0.30-9.el7.x86_64
qpid-cpp-client-devel-0.30-9.el7.x86_64
qpid-cpp-server-0.30-9.el7.x86_64
qpid-cpp-server-linearstore-0.30-9.el7.x86_64
qpid-dispatch-router-0.4-10.el7.x86_64
qpid-java-client-0.30-3.el7.noarch
qpid-java-common-0.30-3.el7.noarch
qpid-proton-c-0.9-7.el7.x86_64
qpid-qmf-0.30-5.el7.x86_64
qpid-tools-0.30-4.el7.noarch
ruby193-rubygem-katello-2.2.0.76-1.el7sat.noarch
ruby193-rubygem-qpid_messaging-0.30.0-1.el7sat.x86_64
rubygem-hammer_cli_katello-0.0.7.18-1.el7sat.noarch
rubygem-smart_proxy_pulp-1.0.1.2-1.el7sat.noarch
satellite2.released-el7.satellite.lab.eng.rdu2.redhat.com-qpid-broker-1.0-1.noarch
satellite2.released-el7.satellite.lab.eng.rdu2.redhat.com-qpid-client-cert-1.0-1.noarch
satellite2.released-el7.satellite.lab.eng.rdu2.redhat.com-qpid-router-client-1.0-1.noarch
satellite2.released-el7.satellite.lab.eng.rdu2.redhat.com-qpid-router-server-1.0-1.noarch

Additional info:

Filling under Webui/Katello due to the foreman_tasks in the katello folder in /opt instead of /usr/share/foreman.

This is the SQL statement that is run:
[D]   User Load (155.7ms)  SELECT "users".* FROM "users" INNER JOIN "foreman_tasks_locks" ON "users"."id" = "foreman_tasks_locks"."resource_id" WHERE "users"."id" IN (11, 8, 9, 10, 1, 2, 13, 3) AND "foreman_tasks_locks"."task_id" = '6dae4635-91c2-4bc9-b22f-2410e889c04a' AND "foreman_tasks_locks"."resource_type" = 'User' AND (foreman_tasks_locks.name = 'task_owner') ORDER BY firstname LIMIT 1

That the query was run 200 times once per row and each time that took 150 ms, sometimes 180