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synapse-product/changelog.d/8456.misc

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Reduce serialization errors in MultiWriterIdGen (#8456) We call `_update_stream_positions_table_txn` a lot, which is an UPSERT that can conflict in `REPEATABLE READ` isolation level. Instead of doing a transaction consisting of a single query we may as well run it outside of a transaction.
2020-10-07 14:15:57 +00:00
Reduce number of serialization errors of `MultiWriterIdGenerator._update_table`.
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