Michael Brown
1b3d60d961
Bulk inserts of product definitions (e.g. via a CSV import) will suffer from an O(n^2) performance penalty due to an unfortunate cache invalidation bug. The underlying cause is difficult to determine due to the labyrinthine nature of the relationship between product.product and product.template, but some key elements are: - The "product_variant_count" field is a non-stored computed field, and so gets invalidated by the call to recs.modified(upd_todo) in BaseModel.create() - Field.determine_value() will call _prefetch_field() to repopulate "product_variant_count" by refetching all records from the database, despite the fact that "product_variant_count" is not stored in the database. Using the length of "product_variant_ids" directly (instead of going via "product_variant_count") seems to avoid this problem, possibly because the definition of "product_variant_ids" conveys more information about the circumstances in which its value must be invalidated. An alternative solution of making product_variant_count a stored field (using the same trigger as for other variant-derived fields such as volume and weight) works but still results in some unnecessary fetches and invalidations. Signed-off-by: Michael Brown <mbrown@fensystems.co.uk> Closes #13689
Odoo
Odoo is a suite of web based open source business apps.
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