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Stop populating state_events.prev_state (#11558)

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this field is never read, so we may as well stop populating it.
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Richard van der Hoff 2021-12-10 14:13:23 +00:00 committed by GitHub
parent 9562f0c2f1
commit 86e7a6d16e
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3 changed files with 5 additions and 5 deletions
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1
changelog.d/11558.misc Normal file
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@ -0,0 +1 @@
Stop populating unused database column `state_events.prev_state`.

4
synapse/storage/databases/main/events.py
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@ -1410,10 +1410,6 @@ class PersistEventsStore:
"state_key": event.state_key, "state_key": event.state_key,
} }
# TODO: How does this work with backfilling?
if hasattr(event, "replaces_state"):
vals["prev_state"] = event.replaces_state
state_values.append(vals) state_values.append(vals)
self.db_pool.simple_insert_many_txn( self.db_pool.simple_insert_many_txn(

5
synapse/storage/schema/__init__.py
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@ -12,7 +12,7 @@
# See the License for the specific language governing permissions and # See the License for the specific language governing permissions and
# limitations under the License. # limitations under the License.
SCHEMA_VERSION = 66 # remember to update the list below when updating SCHEMA_VERSION = 67 # remember to update the list below when updating
"""Represents the expectations made by the codebase about the database schema """Represents the expectations made by the codebase about the database schema
This should be incremented whenever the codebase changes its requirements on the This should be incremented whenever the codebase changes its requirements on the
@ -50,6 +50,9 @@ Changes in SCHEMA_VERSION = 65:
Changes in SCHEMA_VERSION = 66: Changes in SCHEMA_VERSION = 66:
- Queries on state_key columns are now disambiguated (ie, the codebase can handle - Queries on state_key columns are now disambiguated (ie, the codebase can handle
the `events` table having a `state_key` column). the `events` table having a `state_key` column).
Changes in SCHEMA_VERSION = 67:
- state_events.prev_state is no longer written to.
""" """