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Add membership column to current_state_events table #5706

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merged 7 commits into from Jul 19, 2019
Merged

Add membership column to current_state_events table #5706

merged 7 commits into from Jul 19, 2019

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erikjohnston
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Staring at pg_stat_statements on matrix.org's synapse shows a lot of IO goes on queries that are of the form current_state_events INNER JOIN room_memberships. This PR folds in the membership column into the current_state_events table so that we don't have to do the join. This should hopefully mean a lot less IO, since current_state_events table can fit in the disk cache.

The commits should be separately reviewable.

@richvdh richvdh self-requested a review July 18, 2019 09:19
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codecov bot commented Jul 18, 2019 •
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Codecov Report

Merging #5706 into develop will decrease coverage by 0.08%.
The diff coverage is 78.04%.

@@             Coverage Diff             @@
##           develop    #5706      +/-   ##
===========================================
- Coverage    63.42%   63.34%   -0.09%     
===========================================
  Files          331      331              
  Lines        36163    36176      +13     
  Branches      5960     5960              
===========================================
- Hits         22938    22915      -23     
- Misses       11597    11627      +30     
- Partials      1628     1634       +6

@erikjohnston erikjohnston force-pushed the erikj/add_memberships_to_current_state branch from 9f75cdc to eabf0a4 Compare July 18, 2019 13:03
@erikjohnston erikjohnston force-pushed the erikj/add_memberships_to_current_state branch from eabf0a4 to 89c8859 Compare July 18, 2019 13:16
richvdh
richvdh reviewed Jul 19, 2019
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couple of nits, generally lgtm

next we're going to need an index which includes membership?

synapse/storage/schema/delta/56/current_state_events_membership.sql Show resolved Hide resolved
synapse/storage/prepare_database.py
@@ -27,7 +27,7 @@

# 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 = 55
SCHEMA_VERSION = 56
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what's the thinking behind the schema bump?

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Mainly that this stops people from rolling back, which will cause membership column to not be correctly updated.

synapse/storage/roommember.py Outdated Show resolved Hide resolved
synapse/storage/roommember.py
if pending_update:
self._clock.call_later(
15.0,
run_as_background_process,
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\o/

@erikjohnston
Update comment for new column
ebc5ed1
@erikjohnston
LoggingTransaction accepts None for callback lists.
bd2e1a2 
Its a bit disingenuousto give LoggingTransaction lists to append
callbacks to if we're not going to run the callbacks.
@erikjohnston
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next we're going to need an index which includes membership?

Maybe, though I don't think its the end of the world for postgres to scan all membership events in current state tbh.

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Although I guess we have the index:

    "current_state_events_member_index" btree (state_key) WHERE type = 'm.room.member'::text

which might be good to add a membership to, perhaps.

richvdh
richvdh approved these changes Jul 19, 2019
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lgtm

@erikjohnston erikjohnston merged commit 5c07c97 into develop Jul 19, 2019
This was referenced Jul 23, 2019
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babolivier added a commit that referenced this pull request Aug 15, 2019
@babolivier
Merge tag 'v1.3.0'
6382914 
Synapse 1.3.0 (2019-08-15)
==========================

Bugfixes
--------

- Fix 500 Internal Server Error on `publicRooms` when the public room list was
  cached. ([\#5851](#5851))

Synapse 1.3.0rc1 (2019-08-13)
==========================

Features
--------

- Use `M_USER_DEACTIVATED` instead of `M_UNKNOWN` for errcode when a deactivated user attempts to login. ([\#5686](#5686))
- Add sd_notify hooks to ease systemd integration and allows usage of Type=Notify. ([\#5732](#5732))
- Synapse will no longer serve any media repo admin endpoints when `enable_media_repo` is set to False in the configuration. If a media repo worker is used, the admin APIs relating to the media repo will be served from it instead. ([\#5754](#5754), [\#5848](#5848))
- Synapse can now be configured to not join remote rooms of a given "complexity" (currently, state events) over federation. This option can be used to prevent adverse performance on resource-constrained homeservers. ([\#5783](#5783))
- Allow defining HTML templates to serve the user on account renewal attempt when using the account validity feature. ([\#5807](#5807))

Bugfixes
--------

- Fix UISIs during homeserver outage. ([\#5693](#5693), [\#5789](#5789))
- Fix stack overflow in server key lookup code. ([\#5724](#5724))
- start.sh no longer uses deprecated cli option. ([\#5725](#5725))
- Log when we receive an event receipt from an unexpected origin. ([\#5743](#5743))
- Fix debian packaging scripts to correctly build sid packages. ([\#5775](#5775))
- Correctly handle redactions of redactions. ([\#5788](#5788))
- Return 404 instead of 403 when accessing /rooms/{roomId}/event/{eventId} for an event without the appropriate permissions. ([\#5798](#5798))
- Fix check that tombstone is a state event in push rules. ([\#5804](#5804))
- Fix error when trying to login as a deactivated user when using a worker to handle login. ([\#5806](#5806))
- Fix bug where user `/sync` stream could get wedged in rare circumstances. ([\#5825](#5825))
- The purge_remote_media.sh script was fixed. ([\#5839](#5839))

Deprecations and Removals
-------------------------

- Synapse now no longer accepts the `-v`/`--verbose`, `-f`/`--log-file`, or `--log-config` command line flags, and removes the deprecated `verbose` and `log_file` configuration file options. Users of these options should migrate their options into the dedicated log configuration. ([\#5678](#5678), [\#5729](#5729))
- Remove non-functional 'expire_access_token' setting. ([\#5782](#5782))

Internal Changes
----------------

- Make Jaeger fully configurable. ([\#5694](#5694))
- Add precautionary measures to prevent future abuse of `window.opener` in default welcome page. ([\#5695](#5695))
- Reduce database IO usage by optimising queries for current membership. ([\#5706](#5706), [\#5738](#5738), [\#5746](#5746), [\#5752](#5752), [\#5770](#5770), [\#5774](#5774), [\#5792](#5792), [\#5793](#5793))
- Improve caching when fetching `get_filtered_current_state_ids`. ([\#5713](#5713))
- Don't accept opentracing data from clients. ([\#5715](#5715))
- Speed up PostgreSQL unit tests in CI. ([\#5717](#5717))
- Update the coding style document. ([\#5719](#5719))
- Improve database query performance when recording retry intervals for remote hosts. ([\#5720](#5720))
- Add a set of opentracing utils. ([\#5722](#5722))
- Cache result of get_version_string to reduce overhead of `/version` federation requests. ([\#5730](#5730))
- Return 'user_type' in admin API user endpoints results. ([\#5731](#5731))
- Don't package the sytest test blacklist file. ([\#5733](#5733))
- Replace uses of returnValue with plain return, as returnValue is not needed on Python 3. ([\#5736](#5736))
- Blacklist some flakey tests in worker mode. ([\#5740](#5740))
- Fix some error cases in the caching layer. ([\#5749](#5749))
- Add a prometheus metric for pending cache lookups. ([\#5750](#5750))
- Stop trying to fetch events with event_id=None. ([\#5753](#5753))
- Convert RedactionTestCase to modern test style. ([\#5768](#5768))
- Allow looping calls to be given arguments. ([\#5780](#5780))
- Set the logs emitted when checking typing and presence timeouts to DEBUG level, not INFO. ([\#5785](#5785))
- Remove DelayedCall debugging from the test suite, as it is no longer required in the vast majority of Synapse's tests. ([\#5787](#5787))
- Remove some spurious exceptions from the logs where we failed to talk to a remote server. ([\#5790](#5790))
- Improve performance when making `.well-known` requests by sharing the SSL options between requests. ([\#5794](#5794))
- Disable codecov GitHub comments on PRs. ([\#5796](#5796))
- Don't allow clients to send tombstone events that reference the room it's sent in. ([\#5801](#5801))
- Deny redactions of events sent in a different room. ([\#5802](#5802))
- Deny sending well known state types as non-state events. ([\#5805](#5805))
- Handle incorrectly encoded query params correctly by returning a 400. ([\#5808](#5808))
- Handle pusher being deleted during processing rather than logging an exception. ([\#5809](#5809))
- Return 502 not 500 when failing to reach any remote server. ([\#5810](#5810))
- Reduce global pauses in the events stream caused by expensive state resolution during persistence. ([\#5826](#5826))
- Add a lower bound to well-known lookup cache time to avoid repeated lookups. ([\#5836](#5836))
- Whitelist history visbility sytests in worker mode tests. ([\#5843](#5843))
@erikjohnston erikjohnston deleted the erikj/add_memberships_to_current_state branch January 9, 2020 15:50
anoadragon453 added a commit that referenced this pull request Feb 19, 2020
@anoadragon453
Merge pull request #5706 from matrix-org/erikj/add_memberships_to_cur…
04d4c31 
…rent_state
@richvdh richvdh mentioned this pull request May 1, 2020
Merged
richvdh added a commit that referenced this pull request May 1, 2020
@richvdh
Wait for current_state_events_membership before populate_stats_proces…
97ef147 
…s_rooms (#7387)

populate_stats_process_rooms was added in #5971 / v1.4.0; current_state_events_membership was added in #5706 / v1.3.0.

Fixes #7380.
phil-flex pushed a commit to phil-flex/synapse that referenced this pull request Jun 16, 2020
@richvdh @phil-flex
Wait for current_state_events_membership before populate_stats_proces…
aea0541 
…s_rooms (matrix-org#7387)

populate_stats_process_rooms was added in matrix-org#5971 / v1.4.0; current_state_events_membership was added in matrix-org#5706 / v1.3.0.

Fixes matrix-org#7380.
@Fizzadar Fizzadar mentioned this pull request Sep 7, 2022
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MadLittleMods added a commit that referenced this pull request Jun 6, 2023
@MadLittleMods
No need for the extra join since membership is built-in to `current_s…
a23749e 
…tate_events`

`current_state_events` was added in #5706
and #13745
@MadLittleMods MadLittleMods mentioned this pull request Jun 6, 2023
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MadLittleMods added a commit that referenced this pull request Jun 7, 2023
@MadLittleMods
No need for the extra join since membership is built-in to `current…
9d911b0 
…_state_events` (#15731)

This helps with the upstream `is_host_joined()` and `is_host_invited()` functions.

`membership` was added to `current_state_events` in #5706 and forced in #13745
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