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Drop unused table public_room_list_stream. #11795

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Jan 21, 2022
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Drop unused table public_room_list_stream. #11795

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b3ec694
Drop unused table `public_room_list_stream`.
richvdh Jan 20, 2022
006bb16
Remove reference in `purge_room`
richvdh Jan 20, 2022
cdf6762
update test cases
richvdh Jan 20, 2022
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1 change: 1 addition & 0 deletions changelog.d/11795.misc
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@@ -0,0 +1 @@
Drop unused table `public_room_list_stream`.
1 change: 0 additions & 1 deletion synapse/storage/databases/main/purge_events.py
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Expand Up @@ -390,7 +390,6 @@ def _purge_room_txn(self, txn, room_id: str) -> List[int]:
"event_search",
"events",
"group_rooms",
"public_room_list_stream",
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@richvdh richvdh Jan 20, 2022 •
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the fact this was here means that if you:

  • roll forward to a version including this PR
  • then roll back again
  • then do a "delete room" via the admin API

... then it won't work, and you'll get a 500 error.

I feel like that's a sufficiently unlikely combo that it's not worth worrying about, but if it is of concern then we could do another round of removing references (together with a TRUNCATE TABLE) and do the actual DROP TABLE in the future.

"receipts_graph",
"receipts_linearized",
"room_aliases",
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4 changes: 3 additions & 1 deletion synapse/storage/schema/__init__.py
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Expand Up @@ -57,7 +57,9 @@


SCHEMA_COMPAT_VERSION = (
61 # 61: Remove unused tables `user_stats_historical` and `room_stats_historical`
# we have removed the public_room_list_stream table, so are now incompatible with
# synapses wth SCHEMA_VERSION < 63.
63
)
"""Limit on how far the synapse codebase can be rolled back without breaking db compat

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18 changes: 18 additions & 0 deletions synapse/storage/schema/main/delta/67/01drop_public_room_list_stream.sql
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/* Copyright 2022 The Matrix.org Foundation C.I.C
*
* 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.
*/

-- this table is unused as of Synapse 1.41
DROP TABLE public_room_list_stream;