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fix GIST->GIN switch

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This commit is contained in:
Matthew Hodgson 2018-01-09 16:55:51 +00:00
parent e79db0a673
commit a66f489678
3 changed files with 37 additions and 14 deletions
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28
synapse/storage/search.py
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@ -146,24 +146,28 @@ class SearchStore(BackgroundUpdateStore):
@defer.inlineCallbacks
def _background_reindex_gin_search(self, progress, batch_size):
'''This handles old synapses which used GIST indexes; converting them
back to be GIN as per the actual schema. Otherwise it crashes out
as a NOOP
'''This handles old synapses which used GIST indexes, if any;
converting them back to be GIN as per the actual schema.
'''
def create_index(conn):
conn.rollback()
conn.set_session(autocommit=True)
c = conn.cursor()
try:
conn.rollback()
conn.set_session(autocommit=True)
c = conn.cursor()
c.execute(
"CREATE INDEX CONCURRENTLY event_search_fts_idx"
" ON event_search USING GIN (vector)"
)
c.execute(
"CREATE INDEX CONCURRENTLY event_search_fts_idx"
" ON event_search USING GIN (vector)"
)
c.execute("DROP INDEX event_search_fts_idx_gist")
c.execute("DROP INDEX event_search_fts_idx_gist")
conn.set_session(autocommit=False)
conn.set_session(autocommit=False)
except e:
logger.warn(
"Ignoring error %s when trying to switch from GIST to GIN" % (e,)
)
if isinstance(self.database_engine, PostgresEngine):
yield self.runWithConnection(create_index)