##// END OF EJS Templates
fncache: avoid loading the filename cache when not actually modifying it...
fncache: avoid loading the filename cache when not actually modifying it With time, fncache can become very large. The mozilla-central repo for example, has a 31M and growing fncache file. Loading this file takes time (280ms for the mozilla-central repository). In many scenarios, we don't need to load fncache at all. For example, when committing changes to existing files, or pushing such commits to another clone. This patch detects when a name is added via store.vfs(), and only loads the cache if a) the data metadata file doesn't already exist, or b) when opening for appending, the data or metadata file exists but has size (a transaction rollback leaves behind such files). Benchmarks (run on Macos 10.13 on a 2017-model Macbook Pro with Core i7 2.9GHz and flash drive), each test without and with patch run 5 times: * committing to an existing file, against the mozilla-central repository. Baseline real time average 2.3736, with patch 1.9884. * unbundling a large changeset consisting *only* of existing-file modifications (159 revisions, 1050 modifications, mozilla-central 4a250a0e4f29:beea9ac7d823), into a clone limited to the ancestor revision of that revset). Baseline real time average 1.5048, with patch 1.3108.

File last commit:

r38683:8ac0c9cd default
r38683:8ac0c9cd default
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test-fncache.t
508 lines | 14.2 KiB | text/troff | Tads3Lexer
Gregory Szorc
simplestore: use a custom store for the simple store repo...
r37433 #require repofncache
Adrian Buehlmann
tests: unify test-fncache
r11865 Init repo1:
$ hg init repo1
$ cd repo1
$ echo "some text" > a
$ hg add
adding a
$ hg ci -m first
Adrian Buehlmann
tests: sort fncache
r13389 $ cat .hg/store/fncache | sort
Adrian Buehlmann
tests: unify test-fncache
r11865 data/a.i
Testing a.i/b:
$ mkdir a.i
$ echo "some other text" > a.i/b
$ hg add
Matt Harbison
tests: remove (glob) annotations that were only for '\' matches...
r35394 adding a.i/b
Adrian Buehlmann
tests: unify test-fncache
r11865 $ hg ci -m second
Adrian Buehlmann
tests: sort fncache
r13389 $ cat .hg/store/fncache | sort
Adrian Buehlmann
tests: unify test-fncache
r11865 data/a.i
data/a.i.hg/b.i
Testing a.i.hg/c:
$ mkdir a.i.hg
$ echo "yet another text" > a.i.hg/c
$ hg add
Matt Harbison
tests: remove (glob) annotations that were only for '\' matches...
r35394 adding a.i.hg/c
Adrian Buehlmann
tests: unify test-fncache
r11865 $ hg ci -m third
Adrian Buehlmann
tests: sort fncache
r13389 $ cat .hg/store/fncache | sort
Adrian Buehlmann
tests: unify test-fncache
r11865 data/a.i
Adrian Buehlmann
tests: sort fncache
r13389 data/a.i.hg.hg/c.i
Adrian Buehlmann
tests: unify test-fncache
r11865 data/a.i.hg/b.i
Testing verify:
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 3 changesets, 3 total revisions
$ rm .hg/store/fncache
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
Matt Mackall
verify: clarify misleading fncache message...
r25627 warning: revlog 'data/a.i' not in fncache!
warning: revlog 'data/a.i.hg/c.i' not in fncache!
warning: revlog 'data/a.i/b.i' not in fncache!
Adrian Buehlmann
tests: unify test-fncache
r11865 3 files, 3 changesets, 3 total revisions
Matt Mackall
verify: clarify misleading fncache message...
r25627 3 warnings encountered!
Gregory Szorc
verify: print hint to run debugrebuildfncache...
r25653 hint: run "hg debugrebuildfncache" to recover from corrupt fncache
Follow the hint to make sure it works
$ hg debugrebuildfncache
adding data/a.i
adding data/a.i.hg/c.i
adding data/a.i/b.i
3 items added, 0 removed from fncache
$ hg verify
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
3 files, 3 changesets, 3 total revisions
Adrian Buehlmann
tests: unify test-fncache
r11865 $ cd ..
Non store repo:
$ hg --config format.usestore=False init foo
$ cd foo
$ mkdir tst.d
$ echo foo > tst.d/foo
$ hg ci -Amfoo
adding tst.d/foo
$ find .hg | sort
.hg
.hg/00changelog.i
.hg/00manifest.i
Mads Kiilerich
localrepo: update branchcache in a more reliable way...
r15886 .hg/cache
Brodie Rao
branchmap: cache open/closed branch head information...
r20185 .hg/cache/branch2-served
Mads Kiilerich
branchmap: use revbranchcache when updating branch map...
r23786 .hg/cache/rbc-names-v1
.hg/cache/rbc-revs-v1
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/data
.hg/data/tst.d.hg
.hg/data/tst.d.hg/foo.i
.hg/dirstate
FUJIWARA Katsunori
tests: add extra output for fsmonitor at checking under .hg
r33427 .hg/fsmonitor.state (fsmonitor !)
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/last-message.txt
Pierre-Yves David
phases: set new commit in 1-phase
r15483 .hg/phaseroots
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/requires
.hg/undo
Laurent Charignon
localrepo: put bookmark move following commit in one transaction...
r26998 .hg/undo.backup.dirstate
Pierre-Yves David
transaction: include backup file in the "undo" transaction...
r23904 .hg/undo.backupfiles
Alexander Solovyov
fix bookmarks rollback behavior...
r14266 .hg/undo.bookmarks
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/undo.branch
.hg/undo.desc
.hg/undo.dirstate
Pierre-Yves David
phases: add rollback support
r15455 .hg/undo.phaseroots
Adrian Buehlmann
tests: unify test-fncache
r11865 $ cd ..
Non fncache repo:
$ hg --config format.usefncache=False init bar
$ cd bar
$ mkdir tst.d
$ echo foo > tst.d/Foo
$ hg ci -Amfoo
adding tst.d/Foo
$ find .hg | sort
.hg
.hg/00changelog.i
Mads Kiilerich
localrepo: update branchcache in a more reliable way...
r15886 .hg/cache
Brodie Rao
branchmap: cache open/closed branch head information...
r20185 .hg/cache/branch2-served
Mads Kiilerich
branchmap: use revbranchcache when updating branch map...
r23786 .hg/cache/rbc-names-v1
.hg/cache/rbc-revs-v1
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/dirstate
FUJIWARA Katsunori
tests: add extra output for fsmonitor at checking under .hg
r33427 .hg/fsmonitor.state (fsmonitor !)
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/last-message.txt
.hg/requires
.hg/store
.hg/store/00changelog.i
.hg/store/00manifest.i
.hg/store/data
.hg/store/data/tst.d.hg
.hg/store/data/tst.d.hg/_foo.i
Pierre-Yves David
phases: set new commit in 1-phase
r15483 .hg/store/phaseroots
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/store/undo
Pierre-Yves David
transaction: include backup file in the "undo" transaction...
r23904 .hg/store/undo.backupfiles
Pierre-Yves David
phases: add rollback support
r15455 .hg/store/undo.phaseroots
Laurent Charignon
localrepo: put bookmark move following commit in one transaction...
r26998 .hg/undo.backup.dirstate
Alexander Solovyov
fix bookmarks rollback behavior...
r14266 .hg/undo.bookmarks
Adrian Buehlmann
tests: unify test-fncache
r11865 .hg/undo.branch
.hg/undo.desc
.hg/undo.dirstate
$ cd ..
Adrian Buehlmann
test-fncache: test reserved / long paths...
r17710 Encoding of reserved / long paths in the store
$ hg init r2
$ cd r2
$ cat <<EOF > .hg/hgrc
> [ui]
> portablefilenames = ignore
> EOF
Adrian Buehlmann
test-fncache: enable for Windows...
r17748 $ hg import -q --bypass - <<EOF
> # HG changeset patch
> # User test
> # Date 0 0
> # Node ID 1c7a2f7cb77be1a0def34e4c7cabc562ad98fbd7
> # Parent 0000000000000000000000000000000000000000
> 1
>
> diff --git a/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz b/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz
> new file mode 100644
> --- /dev/null
> +++ b/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz
> @@ -0,0 +1,1 @@
> +foo
> diff --git a/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT b/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT
> new file mode 100644
> --- /dev/null
> +++ b/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT
> @@ -0,0 +1,1 @@
> +foo
> diff --git a/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt b/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt
> new file mode 100644
> --- /dev/null
> +++ b/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt
> @@ -0,0 +1,1 @@
> +foo
> diff --git a/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c b/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c
> new file mode 100644
> --- /dev/null
> +++ b/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c
> @@ -0,0 +1,1 @@
> +foo
> diff --git a/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider b/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider
> new file mode 100644
> --- /dev/null
> +++ b/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider
> @@ -0,0 +1,1 @@
> +foo
> EOF
Adrian Buehlmann
test-fncache: test reserved / long paths...
r17710 $ find .hg/store -name *.i | sort
.hg/store/00changelog.i
.hg/store/00manifest.i
.hg/store/data/bla.aux/pr~6e/_p_r_n/lpt/co~6d3/nu~6c/coma/foo._n_u_l/normal.c.i
.hg/store/dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxx168e07b38e65eff86ab579afaaa8e30bfbe0f35f.i
.hg/store/dh/au~78/second/x.prn/fourth/fi~3afth/sixth/seventh/eighth/nineth/tenth/loremia20419e358ddff1bf8751e38288aff1d7c32ec05.i
.hg/store/dh/enterpri/openesba/contrib-/corba-bc/netbeans/wsdlexte/src/main/java/org.net7018f27961fdf338a598a40c4683429e7ffb9743.i
.hg/store/dh/project_/resource/anotherl/followed/andanoth/andthenanextremelylongfilename0d8e1f4187c650e2f1fdca9fd90f786bc0976b6b.i
$ cd ..
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 Aborting lock does not prevent fncache writes
Adrian Buehlmann
test-fncache: test reserved / long paths...
r17710
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 $ cat > exceptionext.py <<EOF
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > from __future__ import absolute_import
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 > import os
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > from mercurial import commands, error, extensions
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 >
Siddharth Agarwal
test-fncache: use args/kwargs for lock wrapper...
r26497 > def lockexception(orig, vfs, lockname, wait, releasefn, *args, **kwargs):
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 > def releasewrap():
Augie Fackler
test-fncache: ensure lock doesn't look held to __del__...
r27168 > l.held = False # ensure __del__ is a noop
Pierre-Yves David
error: get Abort from 'error' instead of 'util'...
r26587 > raise error.Abort("forced lock failure")
Augie Fackler
test-fncache: ensure lock doesn't look held to __del__...
r27168 > l = orig(vfs, lockname, wait, releasewrap, *args, **kwargs)
> return l
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 >
> def reposetup(ui, repo):
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > extensions.wrapfunction(repo, '_lock', lockexception)
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 >
> cmdtable = {}
>
FUJIWARA Katsunori
commands: make commit acquire locks before processing (issue4368)...
r27192 > # wrap "commit" command to prevent wlock from being '__del__()'-ed
> # at the end of dispatching (for intentional "forced lcok failure")
> def commitwrap(orig, ui, repo, *pats, **opts):
> repo = repo.unfiltered() # to use replaced repo._lock certainly
> wlock = repo.wlock()
> try:
> return orig(ui, repo, *pats, **opts)
> finally:
> # multiple 'relase()' is needed for complete releasing wlock,
> # because "forced" abort at last releasing store lock
> # prevents wlock from being released at same 'lockmod.release()'
> for i in range(wlock.held):
> wlock.release()
>
> def extsetup(ui):
Pulkit Goyal
py3: add a b'' prefix in tests/test-fncache.t...
r36511 > extensions.wrapcommand(commands.table, b"commit", commitwrap)
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 > EOF
$ extpath=`pwd`/exceptionext.py
$ hg init fncachetxn
$ cd fncachetxn
$ printf "[extensions]\nexceptionext=$extpath\n" >> .hg/hgrc
$ touch y
$ hg ci -qAm y
abort: forced lock failure
[255]
$ cat .hg/store/fncache
data/y.i
Aborting transaction prevents fncache change
$ cat > ../exceptionext.py <<EOF
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > from __future__ import absolute_import
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 > import os
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > from mercurial import commands, error, extensions, localrepo
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 >
> def wrapper(orig, self, *args, **kwargs):
Pierre-Yves David
fncache: drop dedicated 'onclose' function in favor of 'tr.addfinalize'...
r23510 > tr = orig(self, *args, **kwargs)
> def fail(tr):
Augie Fackler
tests: fix bytes literals in test-fncache.t...
r36680 > raise error.Abort(b"forced transaction failure")
Pierre-Yves David
fncache: drop dedicated 'onclose' function in favor of 'tr.addfinalize'...
r23510 > # zzz prefix to ensure it sorted after store.write
Augie Fackler
tests: fix bytes literals in test-fncache.t...
r36680 > tr.addfinalize(b'zzz-forcefails', fail)
Pierre-Yves David
fncache: drop dedicated 'onclose' function in favor of 'tr.addfinalize'...
r23510 > return tr
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 >
> def uisetup(ui):
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > extensions.wrapfunction(
Augie Fackler
tests: fix bytes literals in test-fncache.t...
r36680 > localrepo.localrepository, b'transaction', wrapper)
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 >
> cmdtable = {}
>
> EOF
Boris Feld
pypy: fix failing test files with Pypy5.6.0...
r33609
Clean cached version
Matt Mackall
tests: ignore missing file with PYTHONDONTWRITEBYTECODE (issue4239)
r21760 $ rm -f "${extpath}c"
Boris Feld
pypy: fix failing test files with Pypy5.6.0...
r33609 $ rm -Rf "`dirname $extpath`/__pycache__"
Durham Goode
fncache: move fncache writing to be in a transaction...
r20883 $ touch z
$ hg ci -qAm z
transaction abort!
rollback completed
abort: forced transaction failure
[255]
$ cat .hg/store/fncache
data/y.i
Durham Goode
transactions: fix hg recover with fncache backups...
r23063
Aborted transactions can be recovered later
$ cat > ../exceptionext.py <<EOF
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > from __future__ import absolute_import
Durham Goode
transactions: fix hg recover with fncache backups...
r23063 > import os
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > from mercurial import (
> commands,
> error,
> extensions,
> localrepo,
> transaction,
> )
Durham Goode
transactions: fix hg recover with fncache backups...
r23063 >
Pierre-Yves David
transaction: remove the redundant 'onclose' mechanism...
r23512 > def trwrapper(orig, self, *args, **kwargs):
> tr = orig(self, *args, **kwargs)
> def fail(tr):
Pierre-Yves David
error: get Abort from 'error' instead of 'util'...
r26587 > raise error.Abort("forced transaction failure")
Pierre-Yves David
transaction: remove the redundant 'onclose' mechanism...
r23512 > # zzz prefix to ensure it sorted after store.write
> tr.addfinalize('zzz-forcefails', fail)
> return tr
Durham Goode
transactions: fix hg recover with fncache backups...
r23063 >
> def abortwrapper(orig, self, *args, **kwargs):
Pierre-Yves David
error: get Abort from 'error' instead of 'util'...
r26587 > raise error.Abort("forced transaction failure")
Durham Goode
transactions: fix hg recover with fncache backups...
r23063 >
> def uisetup(ui):
Augie Fackler
tests: update test-fncache to pass our import checker
r33958 > extensions.wrapfunction(localrepo.localrepository, 'transaction',
> trwrapper)
> extensions.wrapfunction(transaction.transaction, '_abort',
> abortwrapper)
Durham Goode
transactions: fix hg recover with fncache backups...
r23063 >
> cmdtable = {}
>
> EOF
Boris Feld
pypy: fix failing test files with Pypy5.6.0...
r33609
Clean cached versions
Durham Goode
transactions: fix hg recover with fncache backups...
r23063 $ rm -f "${extpath}c"
Boris Feld
pypy: fix failing test files with Pypy5.6.0...
r33609 $ rm -Rf "`dirname $extpath`/__pycache__"
Durham Goode
transactions: fix hg recover with fncache backups...
r23063 $ hg up -q 1
$ touch z
$ hg ci -qAm z 2>/dev/null
[255]
$ cat .hg/store/fncache | sort
data/y.i
data/z.i
$ hg recover
rolling back interrupted transaction
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
1 files, 1 changesets, 1 total revisions
$ cat .hg/store/fncache
data/y.i
Gregory Szorc
repair: add functionality to rebuild fncache...
r25652
$ cd ..
debugrebuildfncache does nothing unless repo has fncache requirement
$ hg --config format.usefncache=false init nofncache
$ cd nofncache
$ hg debugrebuildfncache
Wagner Bruna
repair: fix typo in warning message
r25874 (not rebuilding fncache because repository does not support fncache)
Gregory Szorc
repair: add functionality to rebuild fncache...
r25652
$ cd ..
debugrebuildfncache works on empty repository
$ hg init empty
$ cd empty
$ hg debugrebuildfncache
fncache already up to date
$ cd ..
debugrebuildfncache on an up to date repository no-ops
$ hg init repo
$ cd repo
$ echo initial > foo
$ echo initial > .bar
$ hg commit -A -m initial
adding .bar
adding foo
$ cat .hg/store/fncache | sort
data/.bar.i
data/foo.i
$ hg debugrebuildfncache
fncache already up to date
debugrebuildfncache restores deleted fncache file
$ rm -f .hg/store/fncache
$ hg debugrebuildfncache
adding data/.bar.i
adding data/foo.i
2 items added, 0 removed from fncache
$ cat .hg/store/fncache | sort
data/.bar.i
data/foo.i
Rebuild after rebuild should no-op
$ hg debugrebuildfncache
fncache already up to date
A single missing file should get restored, an extra file should be removed
$ cat > .hg/store/fncache << EOF
> data/foo.i
> data/bad-entry.i
> EOF
$ hg debugrebuildfncache
removing data/bad-entry.i
adding data/.bar.i
1 items added, 1 removed from fncache
$ cat .hg/store/fncache | sort
data/.bar.i
data/foo.i
$ cd ..
Try a simple variation without dotencode to ensure fncache is ignorant of encoding
$ hg --config format.dotencode=false init nodotencode
$ cd nodotencode
$ echo initial > foo
$ echo initial > .bar
$ hg commit -A -m initial
adding .bar
adding foo
$ cat .hg/store/fncache | sort
data/.bar.i
data/foo.i
$ rm .hg/store/fncache
$ hg debugrebuildfncache
adding data/.bar.i
adding data/foo.i
2 items added, 0 removed from fncache
$ cat .hg/store/fncache | sort
data/.bar.i
data/foo.i
Martijn Pieters
fncache: avoid loading the filename cache when not actually modifying it...
r38683
$ cd ..
In repositories that have accumulated a large number of files over time, the
fncache file is going to be large. If we possibly can avoid loading it, so much the better.
The cache should not loaded when committing changes to existing files, or when unbundling
changesets that only contain changes to existing files:
$ cat > fncacheloadwarn.py << EOF
> from __future__ import absolute_import
> from mercurial import extensions, store
>
> def extsetup(ui):
> def wrapstore(orig, requirements, *args):
> store = orig(requirements, *args)
> if 'store' in requirements and 'fncache' in requirements:
> instrumentfncachestore(store, ui)
> return store
> extensions.wrapfunction(store, 'store', wrapstore)
>
> def instrumentfncachestore(fncachestore, ui):
> class instrumentedfncache(type(fncachestore.fncache)):
> def _load(self):
> ui.warn('fncache load triggered!\n')
> super(instrumentedfncache, self)._load()
> fncachestore.fncache.__class__ = instrumentedfncache
> EOF
$ fncachextpath=`pwd`/fncacheloadwarn.py
$ hg init nofncacheload
$ cd nofncacheload
$ printf "[extensions]\nfncacheloadwarn=$fncachextpath\n" >> .hg/hgrc
A new file should trigger a load, as we'd want to update the fncache set in that case:
$ touch foo
$ hg ci -qAm foo
fncache load triggered!
But modifying that file should not:
$ echo bar >> foo
$ hg ci -qm foo
If a transaction has been aborted, the zero-size truncated index file will
not prevent the fncache from being loaded; rather than actually abort
a transaction, we simulate the situation by creating a zero-size index file:
$ touch .hg/store/data/bar.i
$ touch bar
$ hg ci -qAm bar
fncache load triggered!
Unbundling should follow the same rules; existing files should not cause a load:
$ hg clone -q . tobundle
$ echo 'new line' > tobundle/bar
$ hg -R tobundle ci -qm bar
$ hg -R tobundle bundle -q barupdated.hg
$ hg unbundle -q barupdated.hg
but adding new files should:
$ touch tobundle/newfile
$ hg -R tobundle ci -qAm newfile
$ hg -R tobundle bundle -q newfile.hg
$ hg unbundle -q newfile.hg
fncache load triggered!
$ cd ..