[Expo-tech] loser git conversion

[Mark Shinwell]

On Wed, 6 May 2020 at 01:53, Wookey <wookey at wookware.org> wrote:

> On 2020-05-03 17:28 +0100, Mark Shinwell wrote:
>
> > In fact if you want to look at something else, there are some problems
> later
> > on, where some ARGE data was brought in containing multiple years'
> surveys in
> > the same hg commits. I fear this may be quite extensive.
>
> OK. so I looked through all the tags to see how may 'wrong year' files
> were added in each year. Details are below. Then I started to compare
> with the hg datasets to see how different it was from before.
>

Good work, thanks.

I didn't specify any particular conversion options to get a linear history,
but I think it's probably the right thing to do, at least for the
historical data.  I'm less sure about going forward, but that needs
separate thinking about anyway.

I'm unsure we can reasonably do the yearly checkpoint thing unless the
history is linear across those points.

Marking the post-<year> tags in hg to match the git ones reveals one
> very odd thing: post-2012 is the commit _after_ post-2013 in hg. (on
> different branches). So it looks like both years were sorted at the
> same time on parallel branches then merged.
>

Yeah, I spotted this too, which seemed confusing.  I deliberately
re-ordered some of the 2012/2013 changesets, where the long-standing
separate branch existed, so the 2012 changesets ended up earlier.

I think the current situation is overall an improvement.  There is the
potential problem with regards to synchronisation with the web site, but
I'm not really sure that's worth worrying about -- it seems like a rather
infrequent event for someone to try to check out an old version.  It seems
much more likely to happen with the dataset.

I'll start looking at your list when I've finished with the "gap", which
shouldn't be too long.  I think it is worth spending the time now to get
matters sorted.

Mark
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.wookware.org/pipermail/expo-tech/attachments/20200506/fb06549f/attachment.htm>