Change in ovirt-engine[ovirt-engine-4.0]: db: memory_and_disk_images_storage_domain_view - EXISTS inst...

[Code Review]

>From Tal Nisan <tnisan at redhat.com>:

Tal Nisan has submitted this change and it was merged.

Change subject: db: memory_and_disk_images_storage_domain_view - EXISTS instead of JOIN
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db: memory_and_disk_images_storage_domain_view - EXISTS instead of JOIN

Change Ifbedd49da added indexes and changed the
memory_and_disk_images_storage_domain_view view to use JOIN instead of EXISTS
to determine if the disk is a memory disk/ovf store. On certain datasets
and under load that causes postgres to execute the query slower.

As we yet to find a case in which using EXISTS for those tables causes
to a problem, this patch restores the use of it in the view.

Change-Id: I7daa22d37d67502836f5222fc9acaaa85881379e
Bug-Url: https://bugzilla.redhat.com/1412626
Signed-off-by: Liron Aravot <laravot at redhat.com>
---
M packaging/dbscripts/create_views.sql
1 file changed, 13 insertions(+), 6 deletions(-)

Approvals:
  Tal Nisan: Looks good to me, approved
  Jenkins CI: Passed CI tests
  Liron Aravot: Verified



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Gerrit-MessageType: merged
Gerrit-Change-Id: I7daa22d37d67502836f5222fc9acaaa85881379e
Gerrit-PatchSet: 1
Gerrit-Project: ovirt-engine
Gerrit-Branch: ovirt-engine-4.0
Gerrit-Owner: Liron Aravot <laravot at redhat.com>
Gerrit-Reviewer: Jenkins CI
Gerrit-Reviewer: Liron Aravot <laravot at redhat.com>
Gerrit-Reviewer: Tal Nisan <tnisan at redhat.com>