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fix GIST->GIN switch
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e79db0a673
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@ -13,5 +13,7 @@
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* limitations under the License.
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*/
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INSERT into background_updates (update_name, progress_json)
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VALUES ('event_search_postgres_gist', '{}');
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-- We no longer do this given we back it out again in schema 46
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-- INSERT into background_updates (update_name, progress_json)
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-- VALUES ('event_search_postgres_gist', '{}');
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17
synapse/storage/schema/delta/46/postgres_fts_gin.sql
Normal file
17
synapse/storage/schema/delta/46/postgres_fts_gin.sql
Normal file
@ -0,0 +1,17 @@
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/* Copyright 2018 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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INSERT into background_updates (update_name, progress_json)
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VALUES ('event_search_postgres_gin', '{}');
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@ -146,24 +146,28 @@ class SearchStore(BackgroundUpdateStore):
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@defer.inlineCallbacks
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def _background_reindex_gin_search(self, progress, batch_size):
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'''This handles old synapses which used GIST indexes; converting them
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back to be GIN as per the actual schema. Otherwise it crashes out
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as a NOOP
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'''This handles old synapses which used GIST indexes, if any;
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converting them back to be GIN as per the actual schema.
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'''
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def create_index(conn):
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conn.rollback()
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conn.set_session(autocommit=True)
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c = conn.cursor()
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try:
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conn.rollback()
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conn.set_session(autocommit=True)
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c = conn.cursor()
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c.execute(
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"CREATE INDEX CONCURRENTLY event_search_fts_idx"
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" ON event_search USING GIN (vector)"
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)
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c.execute(
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"CREATE INDEX CONCURRENTLY event_search_fts_idx"
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" ON event_search USING GIN (vector)"
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)
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c.execute("DROP INDEX event_search_fts_idx_gist")
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c.execute("DROP INDEX event_search_fts_idx_gist")
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conn.set_session(autocommit=False)
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conn.set_session(autocommit=False)
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except e:
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logger.warn(
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"Ignoring error %s when trying to switch from GIST to GIN" % (e,)
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)
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if isinstance(self.database_engine, PostgresEngine):
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yield self.runWithConnection(create_index)
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