Filtered repository are *subset* of unfiltered repository. This means that a
filtered branchmap could be use to compute the unfiltered version.
And filtered version happen to be subset of each other:
- "all() - unserved()" is a subset of "all() - hidden()"
- "all() - hidden()" is a subset of "all()"
This means that branchmap with "unfiltered" filter can be used as a base for
"hidden" branchmap that itself could be used as a base for unfiltered
branchmap.
unserved < hidden < None
This changeset implements this mechanism. If the on disk branchcache is not valid
we use the branchcache of the nearest subset as base instead of computing it from
scratch. Such fallback can be cascaded multiple time is necessary.
Note that both "hidden" and "unserved" set are a bit volatile. We will add more
stable filtering in next changesets.
This changeset enables collaboration between no filtering and "unserved"
filtering. Fixing performance regression introduced by 7bff5f37cb97
If we want branchcache of different filter to collaborate, they need a simple
way to copy each other. This will ensure that each filtered have no side effect
on other filter level cache.
Mercurial would sometimes exit with:
abort: No such file or directory
where str of the actual OSError exception was the more helpful:
[Errno 2] No such file or directory: ''
The exception will now always show the filename and quote it:
abort: No such file or directory: ''
When extensions had an empty `testedwith` attribute the code tried to parse it
and failed. As a result the actual error were shallowed by a This crash.
We now treat empty strip as 'unknown'
Disables this simple optimisation to allow coming more powerfull approach: cache
collaboration.
Our goal is to have branchcache collaborate. This means that unfiltered
branchcache will fallback to some filtered branchcache if invalid. We can't have
the filtered branchcache to use the unfiltered one. That would loop.
This test started failing for me after midnight UTC on December
31st. Fixed it by specifying a date 7 years in the future more
precisely (rather than just adding 8 to the year and specifying
January 1st), which allows the test to pass both now and on 2012-12-01
at the same time.
The active bookmark were moved to the temporary commit. When the transaction
were rollbacked, the bookmark were lost.
We now temporarly disable the bookmark to prevent this effect.
The temporary commit created by amend update the dirstate. If the final commit
fails, we need to invalidate the change made to the dirstate, otherwise the
release of the wlock will write the dirstate created after the rollbacked
temporary commit.
This dirstate writing logic should probably be handled in the same object than
the transaction one. However such change are too big for stable.
When commit is followed by strip (qrefresh), phasecache contains nodes that were
removed from the changelog. Since phasecache is filecached with .hg/store/phaseroots
which doesn't change as a result of stripping, we have to filter it manually.
If we don't write it immediately, the next time it is read from disk the nodes
will be filtered again. That's what happened before, but there's no reason not
to write it immediately.
The change in test-keyword.t is caused by the above.
Nobody overwrite the `_cacheabletip` any more. We always update the cache for
the whole repo and write it to disk (or at list try to). The `updatecache` code
is simplied to remove the double phase logic associated with _cacheabletip.
Strip have dedicated work around to solve the same problem, strip is even a
fraction faster without that thanks to simpler update process of the branchcache.
We do not want anything computed with the bundle overlay to be written back in
the repo. Such write will likely contains invalid data.
The short terms goal of this change is to drop use of `_cacheabletip` in bundle
repo.
On `filectx`, linkrev may point to any revision in the repository. When the
repository is filtered this may lead to `filectx` trying to build `changectx`
for filtered revision. In such case we fallback to creating `changectx` on the
unfiltered version of the reposition. This fallback should not be an issue
because `changectx` from `filectx` are not used in complex operation that
care about filtering. It is complicated to work around the issue in a
clearer way as code raising such `filectx` rarely have access to the
repository directly.
Linkrevs create a lot of issue with filtering. It is stored in revlog entry at
creation time and never changed. Nothing prevent the changeset revision pointed
to become filtered. Several bogus behavior emerge from such situation. Those
bugs are complex to solve and not part of the current effort to install
filtering. This changeset is simple hack that prevent plain crash in favor on
minor misbehavior without visible effect.
This "hack" is longly documented in to code itself to help people that would
look at it in the future.
The phase command have some logic to report change made. We ensure this logic
run unfiltered.
With --force the command can change phase of a changeset for public to draft.
Such change can lead to obsolescence marker to apply again and the changeset to
be "hidden". If we do not run the logic unfiltered it could failed to fetch the
phase of a newly filtered changeset.
Problem: 'hg status' with largefiles enabled would walk through all the files
that .hgignore said should be ignored. That made it slow if a lot of files were
.hgignored or the cache was cold.
It seems like there was a reason to this, but other improvements has rendered
this unnecessary.
Solution: .hgignore is now only ignored when that is requested (--ignore).
This is a minimal 'stable' change. There is room for other improvement.
Largefiles revert do for some reason have two lfdirstates and lfdirstatestatus
invocations in one function. The result from the first lfdirstate check was
however not written back to the lfdirstate, and some files was thus checked
twice.
Problem: 'hg status' kept checking largefiles with an unknown state until some
other command wrote the updated dirstate.
Solution: Add missing lfdirstate.write().
Problem:
getremotechanges would return the 'other' repo if nothing was incoming and
there thus wasn't any bundle to base the repo on. The 'other' could be a http
peer which only implement the functionality available over the http protocol.
Transplant could thus fail with
TypeError: argument of type 'httppeer' is not iterable
Solution:
Return the local repo instead of the remote peer if there is no reason to place
a bundlerepo on top of the local repo.
