Avoid passing partial arguments as string to sync_local - #219
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When
sync_localis called for partial checkpoints, we currently pass a JSON array of bucket names around in Rust. This PR simplifies that by passing the actual bucket names around as a vector of string references, and only serializes to JSON in the single place where we bind them to a SQL query.I have also experimented with an approach splitting the statements (first finding updated rows, then looking up the latest oplog entry in a separate prepared statement) which avoids the serialization entirely, but causes many more reads in the sync local performance test.
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