diff --git a/synapse/storage/prepare_database.py b/synapse/storage/prepare_database.py
index d2c0aebe48..6576a30098 100644
--- a/synapse/storage/prepare_database.py
+++ b/synapse/storage/prepare_database.py
@@ -25,7 +25,7 @@ logger = logging.getLogger(__name__)
# Remember to update this number every time a change is made to database
# schema files, so the users will be informed on server restarts.
-SCHEMA_VERSION = 37
+SCHEMA_VERSION = 38
dir_path = os.path.abspath(os.path.dirname(__file__))
diff --git a/synapse/storage/schema/delta/38/postgres_fts_gist.sql b/synapse/storage/schema/delta/38/postgres_fts_gist.sql
new file mode 100644
index 0000000000..f090a7b75a
--- /dev/null
+++ b/synapse/storage/schema/delta/38/postgres_fts_gist.sql
@@ -0,0 +1,17 @@
+/* Copyright 2016 OpenMarket Ltd
+ *
+ * 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.
+ */
+
+ INSERT into background_updates (update_name, progress_json)
+ VALUES ('event_search_postgres_gist', '{}');
diff --git a/synapse/storage/search.py b/synapse/storage/search.py
index 12941d1775..eae90c2fd8 100644
--- a/synapse/storage/search.py
+++ b/synapse/storage/search.py
@@ -31,6 +31,7 @@ class SearchStore(BackgroundUpdateStore):
EVENT_SEARCH_UPDATE_NAME = "event_search"
EVENT_SEARCH_ORDER_UPDATE_NAME = "event_search_order"
+ EVENT_SEARCH_USE_GIST_POSTGRES_NAME = "event_search_postgres_gist"
def __init__(self, hs):
super(SearchStore, self).__init__(hs)
@@ -41,6 +42,10 @@ class SearchStore(BackgroundUpdateStore):
self.EVENT_SEARCH_ORDER_UPDATE_NAME,
self._background_reindex_search_order
)
+ self.register_background_update_handler(
+ self.EVENT_SEARCH_USE_GIST_POSTGRES_NAME,
+ self._background_reindex_gist_search
+ )
@defer.inlineCallbacks
def _background_reindex_search(self, progress, batch_size):
@@ -140,6 +145,28 @@ class SearchStore(BackgroundUpdateStore):
defer.returnValue(result)
@defer.inlineCallbacks
+ def _background_reindex_gist_search(self, progress, batch_size):
+ def create_index(conn):
+ conn.rollback()
+ conn.set_session(autocommit=True)
+ c = conn.cursor()
+
+ # We create with NULLS FIRST so that when we search *backwards*
+ # we get the ones with non null origin_server_ts *first*
+ c.execute(
+ "CREATE INDEX CONCURRENTLY event_search_fts_idx_gist"
+ " ON event_search USING GIST (vector)"
+ )
+ c.execute("DROP INDEX event_search_fts_idx")
+ conn.set_session(autocommit=False)
+
+ if isinstance(self.database_engine, PostgresEngine):
+ yield self.runWithConnection(create_index)
+
+ yield self._end_background_update(self.EVENT_SEARCH_USE_GIST_POSTGRES_NAME)
+ defer.returnValue(1)
+
+ @defer.inlineCallbacks
def _background_reindex_search_order(self, progress, batch_size):
target_min_stream_id = progress["target_min_stream_id_inclusive"]
max_stream_id = progress["max_stream_id_exclusive"]
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