Change in ovirt-engine[master]: core: Reindex vdc_options after upgrade

[amureini at redhat.com]

Allon Mureinik has submitted this change and it was merged.

Change subject: core: Reindex vdc_options after upgrade
......................................................................


core: Reindex vdc_options after upgrade

Once installed in a running system, the vdc_options table is
relatively static, with users rarely changing it. However, upgrading
the system usually involves a large amount of changes to it (see
details below). This makes this table a good candidate for indexing at
the end of the upgrade (hence the script is added to the post_upgrade
directory).

Consider, e.g., upgrading from the latest 3.6 release (i.e., 3.6.3.4,
built from commit cb35e8c) to the current master branch (commit
7fe2363, which will eventually be a part of 4.0 when it's released):
In 3.6.3, this table had 871 rows. The upgrade to 4.0 deleted 468 of
them (~54%) and added 63 new lines (~7%). Reindexing it on my test
setup (Postgres 9.4.6 on Fedora 23, with default configurations) reduced
the size of the ix_vdc_options index from 80KB to 40KB (50%) and the
size of pk_vdc_options, the primary key's index, from 40KB to 32KB
(20%).

Change-Id: I2fff10b11bf3dafa71f96651ef2cecb491f89a86
Signed-off-by: Allon Mureinik <amureini at redhat.com>
---
A packaging/dbscripts/upgrade/post_upgrade/0040_reindex_vdc_options.sql
1 file changed, 1 insertion(+), 0 deletions(-)

Approvals:
  Eli Mesika: Looks good to me, approved
  Allon Mureinik: Verified; Passed CI tests



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Gerrit-MessageType: merged
Gerrit-Change-Id: I2fff10b11bf3dafa71f96651ef2cecb491f89a86
Gerrit-PatchSet: 8
Gerrit-Project: ovirt-engine
Gerrit-Branch: master
Gerrit-Owner: Allon Mureinik <amureini at redhat.com>
Gerrit-Reviewer: Allon Mureinik <amureini at redhat.com>
Gerrit-Reviewer: Eli Mesika <emesika at redhat.com>
Gerrit-Reviewer: Jenkins CI
Gerrit-Reviewer: Yaniv Kaul <ykaul at redhat.com>
Gerrit-Reviewer: gerrit-hooks <automation at ovirt.org>