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https://github.com/element-hq/synapse
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Use special UPDATE syntax
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parent
b57dcb4b51
commit
8fae3d7b1e
2 changed files with 15 additions and 23 deletions
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@ -22,8 +22,8 @@ logger = logging.getLogger(__name__)
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ALTER_TABLE = """
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ALTER TABLE event_search ADD COLUMN origin_server_ts BIGINT;
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ALTER TABLE event_search ADD COLUMN stream_ordering BIGINT;
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ALTER TABLE event_search ADD COLUMN origin_server_ts BIGINT DEFAULT 0;
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ALTER TABLE event_search ADD COLUMN stream_ordering BIGINT DEFAULT 0;
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"""
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@ -169,33 +169,25 @@ class SearchStore(BackgroundUpdateStore):
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self.EVENT_SEARCH_ORDER_UPDATE_NAME, progress,
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)
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INSERT_CLUMP_SIZE = 1000
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def reindex_search_txn(txn):
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sql = (
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"SELECT e.stream_ordering, e.origin_server_ts, event_id FROM events as e"
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" INNER JOIN event_search USING (room_id, event_id)"
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" WHERE ? <= e.stream_ordering AND e.stream_ordering < ?"
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" ORDER BY e.stream_ordering DESC"
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events_sql = (
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"SELECT stream_ordering, origin_server_ts, event_id FROM events"
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" WHERE ? <= stream_ordering AND stream_ordering < ?"
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" ORDER BY stream_ordering DESC"
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" LIMIT ?"
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)
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txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
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rows = txn.fetchall()
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if not rows:
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return 0
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min_stream_id = rows[-1][0]
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sql = (
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"UPDATE event_search SET stream_ordering = ?, origin_server_ts = ?"
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" WHERE event_id = ?"
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)
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"UPDATE event_search AS es SET es.stream_ordering = e.stream_ordering,"
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" es.origin_server_ts = e.origin_server_ts"
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" FROM (%s) AS e"
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" WHERE e.event_id = es.event_id"
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" RETURNING es.stream_ordering"
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) % (events_sql,)
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for index in range(0, len(rows), INSERT_CLUMP_SIZE):
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clump = rows[index:index + INSERT_CLUMP_SIZE]
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txn.executemany(sql, clump)
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txn.execute(sql, (target_min_stream_id, max_stream_id, batch_size))
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rows = txn.fetchall()
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min_stream_id = rows[-1][0]
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progress = {
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"target_min_stream_id_inclusive": target_min_stream_id,
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