martinvonz added a comment.
In https://phab.mercurial-scm.org/D2067#34758, @indygreg wrote: > This looks mostly good. I would like a change to address a future footgun though. > > I would also appreciate someone familiar with censor and narrow to weigh in on the implications of disabling delta generation for revisions that have the censor and ellipsis flags set. I'm pretty sure narrow will cope since it reimplements changegroup generation. Not sure how censor will react. (But I know we already have random code for detecting censored nodes during changegroup generation.) I think narrow would be functionally fine with it disabled, but it would be terrible for storage space. We don't set the ellipsis flag on files, but we do on manifests (and we use tree manifests). Some directories have tens of thousands of entries and tens of thousands of entries and tens of thousands of revisions. Storing them all in full would be bad. We get a compression of close to 2000x (not a typo) on these directories. I just created a pretty large clone for testing this and one directory's revlog there ended up being 9MB instead of 15GB. In https://phab.mercurial-scm.org/D2067#36959, @durin42 wrote: > In https://phab.mercurial-scm.org/D2067#34758, @indygreg wrote: > > > This looks mostly good. I would like a change to address a future footgun though. > > > > I would also appreciate someone familiar with censor and narrow to weigh in on the implications of disabling delta generation for revisions that have the censor and ellipsis flags set. I'm pretty sure narrow will cope since it reimplements changegroup generation. Not sure how censor will react. (But I know we already have random code for detecting censored nodes during changegroup generation.) > > > Hmm, I could swear we already don't generate deltas for ellipsis nodes, and I'm having trouble defending the idea that maybe we should. Censor I'm 99% sure disables deltas. I'll ask adgar, but if you don't hear from me assume I was right. REPOSITORY rHG Mercurial REVISION DETAIL https://phab.mercurial-scm.org/D2067 To: quark, indygreg, #hg-reviewers Cc: martinvonz, durin42, mercurial-devel _______________________________________________ Mercurial-devel mailing list Mercurial-devel@mercurial-scm.org https://www.mercurial-scm.org/mailman/listinfo/mercurial-devel
