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-rw-r--r--ceilometer/storage/impl_sqlalchemy.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/ceilometer/storage/impl_sqlalchemy.py b/ceilometer/storage/impl_sqlalchemy.py
index f4d7de02..d1f7671e 100644
--- a/ceilometer/storage/impl_sqlalchemy.py
+++ b/ceilometer/storage/impl_sqlalchemy.py
@@ -24,7 +24,6 @@ import os
from oslo.config import cfg
from oslo.db import exception as dbexc
-from oslo.db.sqlalchemy import migration
from oslo.db.sqlalchemy import session as db_session
from oslo.utils import timeutils
import six
@@ -227,6 +226,8 @@ class Connection(base.Connection):
)
def upgrade(self):
+ # NOTE(gordc): to minimise memory, only import migration when needed
+ from oslo.db.sqlalchemy import migration
path = os.path.join(os.path.abspath(os.path.dirname(__file__)),
'sqlalchemy', 'migrate_repo')
migration.db_sync(self._engine_facade.get_engine(), path)