Constant mz_storage_types::dyncfgs::STORAGE_UPSERT_MAX_SNAPSHOT_BATCH_BUFFERING

pub const STORAGE_UPSERT_MAX_SNAPSHOT_BATCH_BUFFERING: Config<Option<usize>>;

If storage_upsert_prevent_snapshot_buffering is true, this prevents the upsert operator from buffering too many events from the upstream snapshot. In the absence of hydration flow control, this could prevent certain workloads from causing egregiously large writes to RocksDB.