openstack/nova
Code Issues Proposed changes

add index to instance_uuid column in instances

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Change-Id: I4d5313cfbd97eba7bd755567a0bed9b65adb14dc
This commit is contained in:
Trey Morris 2011-12-02 17:53:34 -06:00
parent 022295ecc2
commit 2e000f3502
2 changed files with 31 additions and 1 deletions
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<nirmal.ranganathan@rackspace.com> <nirmal.ranganathan@rackspace.coom>
<paul@openstack.org> <paul.voccio@rackspace.com>
<paul@openstack.org> <pvoccio@castor.local>
<rconradharris@gmail.com> <rick.harris@rackspace.com>
<rconradharris@gmail.com> <rick.harris@rackspace.com>
<rlane@wikimedia.org> <laner@controller>
<sandy.walsh@rackspace.com> <sandy@sandywalsh.com>
<sleepsonthefloor@gmail.com> <root@tonbuntu>
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<throughnothing@gmail.com> <will.wolf@rackspace.com>
<todd@ansolabs.com> <todd@lapex>
<todd@ansolabs.com> <todd@rubidine.com>
<trey.morris@rackspace.com> <treyemorris@gmail.com>
<tushar.vitthal.patil@gmail.com> <tpatil@vertex.co.in>
<ueno.nachi@lab.ntt.co.jp> <nati.ueno@gmail.com>
<ueno.nachi@lab.ntt.co.jp> <nova@u4>

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nova/db/sqlalchemy/migrate_repo/versions/061_add_index_to_instance_uuid.py Normal file
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# Copyright 2011 OpenStack LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from sqlalchemy import Index, MetaData, Table
meta = MetaData()
def upgrade(migrate_engine):
meta.bind = migrate_engine
instances = Table('instances', meta, autoload=True)
Index('uuid', instances.c.uuid, unique=True).create(migrate_engine)
def downgrade(migrate_engine):
meta.bind = migrate_engine
instances = Table('instances', meta, autoload=True)
Index('uuid', instances.c.uuid, unique=True).drop(migrate_engine)