Moti Asayag has posted comments on this change. Change subject: db: aggregate qos and storage qos impl ......................................................................
Patch Set 6: (1 comment) http://gerrit.ovirt.org/#/c/27094/6/packaging/dbscripts/upgrade/03_05_0330_qos_and_storage_impl.sql File packaging/dbscripts/upgrade/03_05_0330_qos_and_storage_impl.sql: Line 27: -- add index on storage_pool_id Line 28: CREATE INDEX IDX_qos_storage_pool_id ON qos (storage_pool_id); Line 29: Line 30: -- add index on qos_type Line 31: CREATE INDEX IDX_qos_type ON qos (qos_type); > > you're introducing a wrong db design Adding an index on a column which isn't being searched is not the right thing to do, no matter how db optimizer tries to compensate such design. If you had a query as mentioned in my previous comment, than you could claim that both indexes are deserved and we could argue what is the correct approach for that. Since this isn't the case, and any access to that table is being performed by data-center-id first, it is useless to introduce any other indices, which no query was introduced for. -- To view, visit http://gerrit.ovirt.org/27094 To unsubscribe, visit http://gerrit.ovirt.org/settings Gerrit-MessageType: comment Gerrit-Change-Id: I1a9af59277b5055453159f002f19046c0051d63b Gerrit-PatchSet: 6 Gerrit-Project: ovirt-engine Gerrit-Branch: master Gerrit-Owner: Gilad Chaplik <gchap...@redhat.com> Gerrit-Reviewer: Allon Mureinik <amure...@redhat.com> Gerrit-Reviewer: Doron Fediuck <dfedi...@redhat.com> Gerrit-Reviewer: Eli Mesika <emes...@redhat.com> Gerrit-Reviewer: Gilad Chaplik <gchap...@redhat.com> Gerrit-Reviewer: Kobi Ianko <k...@redhat.com> Gerrit-Reviewer: Lior Vernia <lver...@redhat.com> Gerrit-Reviewer: Liron Ar <lara...@redhat.com> Gerrit-Reviewer: Moti Asayag <masa...@redhat.com> Gerrit-Reviewer: Yair Zaslavsky <yzasl...@redhat.com> Gerrit-Reviewer: Yevgeny Zaspitsky <yzasp...@redhat.com> Gerrit-Reviewer: automat...@ovirt.org Gerrit-Reviewer: oVirt Jenkins CI Server Gerrit-HasComments: Yes _______________________________________________ Engine-patches mailing list Engine-patches@ovirt.org http://lists.ovirt.org/mailman/listinfo/engine-patches
