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Create indices after insertion

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This commit is contained in:
Erik Johnston 2018-09-13 15:05:52 +01:00
parent 93139a1fb8
commit 9dbe38ea7d
1 changed files with 18 additions and 14 deletions
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32
synapse/storage/events.py
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@ -1890,20 +1890,6 @@ class EventsStore(EventFederationStore, EventsWorkerStore, BackgroundUpdateStore
")" ")"
) )
# create an index on should_delete because later we'll be looking for
# the should_delete / shouldn't_delete subsets
txn.execute(
"CREATE INDEX events_to_purge_should_delete"
" ON events_to_purge(should_delete)",
)
# We do joins against events_to_purge for e.g. calculating state
# groups to purge, etc., so lets make an index.
txn.execute(
"CREATE INDEX events_to_purge_id"
" ON events_to_purge(event_id)",
)
# First ensure that we're not about to delete all the forward extremeties # First ensure that we're not about to delete all the forward extremeties
txn.execute( txn.execute(
"SELECT e.event_id, e.depth FROM events as e " "SELECT e.event_id, e.depth FROM events as e "
@ -1950,6 +1936,24 @@ class EventsStore(EventFederationStore, EventsWorkerStore, BackgroundUpdateStore
), ),
should_delete_params, should_delete_params,
) )
# We create the indices *after* insertion as that's a lot faster.
# create an index on should_delete because later we'll be looking for
# the should_delete / shouldn't_delete subsets
txn.execute(
"CREATE INDEX events_to_purge_should_delete"
" ON events_to_purge(should_delete)",
)
# We do joins against events_to_purge for e.g. calculating state
# groups to purge, etc., so lets make an index.
txn.execute(
"CREATE INDEX events_to_purge_id"
" ON events_to_purge(event_id)",
)
txn.execute( txn.execute(
"SELECT event_id, should_delete FROM events_to_purge" "SELECT event_id, should_delete FROM events_to_purge"
) )