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changelog.d/10326.bugfix
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1
changelog.d/10326.bugfix
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Fix a long-standing bug where Synapse would return errors after 2<sup>31</sup> events were handled by the server.
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@ -1146,6 +1146,16 @@ class EventsBackgroundUpdatesStore(SQLBaseStore):
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logger.info("completing stream_ordering migration: %s", sql)
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txn.execute(sql)
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# ANALYZE the new column to build stats on it, to encourage PostgreSQL to use the
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# indexes on it.
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# We need to pass execute a dummy function to handle the txn's result otherwise
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# it tries to call fetchall() on it and fails because there's no result to fetch.
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await self.db_pool.execute(
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"background_analyze_new_stream_ordering_column",
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lambda txn: None,
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"ANALYZE events(stream_ordering2)",
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)
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await self.db_pool.runInteraction(
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"_background_replace_stream_ordering_column", process
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)
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