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Merge pull request #5770 from matrix-org/erikj/fix_current_state_event_sqlite
Fix current_state bg update to work on old SQLite
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commit
2a12d76646
@ -49,14 +49,15 @@ steps:
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- command:
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- "python -m pip install tox"
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- "apt-get update && apt-get install -y python3.5 python3.5-dev python3-pip libxml2-dev libxslt-dev zlib1g-dev"
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- "python3.5 -m pip install tox"
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- "tox -e py35-old,codecov"
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label: ":python: 3.5 / SQLite / Old Deps"
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env:
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TRIAL_FLAGS: "-j 2"
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plugins:
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- docker#v3.0.1:
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image: "python:3.5"
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image: "ubuntu:xenial" # We use xenail to get an old sqlite and python
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propagate-environment: true
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retry:
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automatic:
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1
changelog.d/5770.misc
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1
changelog.d/5770.misc
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@ -0,0 +1 @@
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Reduce database IO usage by optimising queries for current membership.
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@ -870,10 +870,10 @@ class RoomMemberStore(RoomMemberWorkerStore):
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next_room, = row
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sql = """
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UPDATE current_state_events AS c
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UPDATE current_state_events
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SET membership = (
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SELECT membership FROM room_memberships
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WHERE event_id = c.event_id
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WHERE event_id = current_state_events.event_id
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)
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WHERE room_id = ?
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"""
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