Manifest compression

Augie Fackler raf at durin42.com
Fri Aug 9 10:07:06 CDT 2013


On Thu, Aug 08, 2013 at 11:45:35PM +0000, Wojciech Lopata wrote:
> Hello,
>
> My name is Wojciech Lopata, I'm an intern at Facebook. I'm going to
> spend next weeks implementing manifest compression, basing on ideas
> described in wiki:
> http://mercurial.selenic.com/wiki/ImprovingManifestCompressionPlan. Feel
> free to email me with any ideas and suggestions.

The one thing that would be nice to preserve would be the ability to
parse only the deltas of a manifest and know what paths were modified,
but I'm not sure that's actually practical. Matt, do you have a
feeling on that? That property of manifests has been really helpful
for hg-on-bigtable (though we're now getting annoyed with how much
space manifests use up, and I'm planning to watch this work with great
interest.)

>
> Thanks,
> Wojciech

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