ooh ive been following their work[1], they published an interesting paper about transactions accross different data stores[2] i wonder how it works with long r

ooh ive been following their work[1], they published an interesting paper about transactions accross different data stores[2] i wonder how it works with long running functions, does it lock the db? [1] https://dbos-project.github.io/ https://dbos-project.github.io/ [2] https://www.vldb.org/pvldb/vol16/p2742-kraft.pdf https://www.vldb.org/pvldb/vol16/p2742-kraft.pdf