On Wed 20 Mar 2019 10:35:27 AM CET, Vladimir Sementsov-Ogievskiy wrote: >> Maybe at least this kind of freezing isn't the right tool for block >> jobs, after all. > > I think, the correct way, which will support these correct cases > (which however don't look like real use cases) is removing base from > stream view. Stream should operate instead using bottom-node.
What is bottom-node? > And this all looks really more complicated than what we already have > with frozen backing chain. > > Do we really need such cases with parallel streams, sharing same node > as base for one and top for another? Will someone be upset if we drop > usage for such scenarios? That would mean that 'base' is blocked and therefore cannot be used by a different block job. I don't think it's terrible to restrict that scenario, although it's technically a regression so someone could complain about it. As I said ealier I would prefer not to do it if there's a simple solution (we would need to think about it), but I wouldn't want to make the code more complicated just for this use case. Berto