The index notification runs all the time. Is there a way to just start this manually?
Emptying the queue doesn’t help because indexing starts again immediately. In the database you can empty the indexing in the „increment“ table by emptying the line „Shopware\Core\Content\Product\DataAbstractionLayer\ProductIndexingMessage“, but the problem remains the same because the indexing starts again directly.
I left the indexing running overnight, but there are now over 5 million products remaining.