branchcache: skip entries that are topological heads in the on disk file
In the majority of cases, topological heads are also branch heads. We have
efficient way to get the topological heads and efficient way to retrieve
their branch information. So there is little value in putting them in the branch
cache file explicitly. On the contrary, writing them explicitly tend to create
very large cache file that are inefficient to read and update.
So the branch cache v3 format is no longer including them. This changeset focus
on the format aspect and have no focus on the performance aspect. We will cover
that later.
#require no-reposimplestore
#testcases stream-v2 stream-v3
#if stream-v2
$ bundle_format="streamv2"
$ stream_version="v2"
#endif
#if stream-v3
$ bundle_format="streamv3-exp"
$ stream_version="v3-exp"
$ cat << EOF >> $HGRCPATH
> [experimental]
> stream-v3=yes
> EOF
#endif
Test creating a consuming stream bundle v2 and v3
$ getmainid() {
> hg -R main log --template '{node}\n' --rev "$1"
> }
$ cp $HGRCPATH $TESTTMP/hgrc.orig
$ cat >> $HGRCPATH << EOF
> [experimental]
> evolution.createmarkers=True
> evolution.exchange=True
> bundle2-output-capture=True
> [ui]
> logtemplate={rev}:{node|short} {phase} {author} {bookmarks} {desc|firstline}
> [web]
> push_ssl = false
> allow_push = *
> [phases]
> publish=False
> [extensions]
> drawdag=$TESTDIR/drawdag.py
> clonebundles=
> EOF
The extension requires a repo (currently unused)
$ hg init main
$ cd main
$ hg debugdrawdag <<'EOF'
> E
> |
> D
> |
> C
> |
> B
> |
> A
> EOF
$ hg bundle -a --type="none-v2;stream=$stream_version" bundle.hg
$ hg debugbundle bundle.hg
Stream params: {}
stream2 -- {bytecount: 1693, filecount: 12, requirements: generaldelta%2Crevlogv1%2Csparserevlog} (mandatory: True) (stream-v2 no-zstd !)
stream2 -- {bytecount: 1693, filecount: 12, requirements: generaldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog} (mandatory: True) (stream-v2 zstd no-rust !)
stream2 -- {bytecount: 1819, filecount: 14, requirements: generaldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog} (mandatory: True) (stream-v2 rust !)
stream3-exp -- {requirements: generaldelta%2Crevlogv1%2Csparserevlog} (mandatory: True) (stream-v3 no-zstd !)
stream3-exp -- {requirements: generaldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog} (mandatory: True) (stream-v3 zstd no-rust !)
stream3-exp -- {requirements: generaldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog} (mandatory: True) (stream-v3 rust !)
$ hg debugbundle --spec bundle.hg
none-v2;stream=v2;requirements%3Dgeneraldelta%2Crevlogv1%2Csparserevlog (stream-v2 no-zstd !)
none-v2;stream=v2;requirements%3Dgeneraldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog (stream-v2 zstd no-rust !)
none-v2;stream=v2;requirements%3Dgeneraldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog (stream-v2 rust !)
none-v2;stream=v3-exp;requirements%3Dgeneraldelta%2Crevlogv1%2Csparserevlog (stream-v3 no-zstd !)
none-v2;stream=v3-exp;requirements%3Dgeneraldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog (stream-v3 zstd no-rust !)
none-v2;stream=v3-exp;requirements%3Dgeneraldelta%2Crevlog-compression-zstd%2Crevlogv1%2Csparserevlog (stream-v3 rust !)
Test that we can apply the bundle as a stream clone bundle
$ cat > .hg/clonebundles.manifest << EOF
> http://localhost:$HGPORT1/bundle.hg BUNDLESPEC=`hg debugbundle --spec bundle.hg`
> EOF
$ hg serve -d -p $HGPORT --pid-file hg.pid --accesslog access.log
$ cat hg.pid >> $DAEMON_PIDS
$ "$PYTHON" $TESTDIR/dumbhttp.py -p $HGPORT1 --pid http.pid
$ cat http.pid >> $DAEMON_PIDS
$ cd ..
#if stream-v2
$ hg clone http://localhost:$HGPORT stream-clone-implicit --debug
using http://localhost:$HGPORT/
sending capabilities command
sending clonebundles_manifest command
applying clone bundle from http://localhost:$HGPORT1/bundle.hg
bundle2-input-bundle: with-transaction
bundle2-input-part: "stream2" (params: 3 mandatory) supported
applying stream bundle
12 files to transfer, 1.65 KB of data (no-rust !)
14 files to transfer, 1.78 KB of data (rust !)
starting 4 threads for background file closing (?)
starting 4 threads for background file closing (?)
adding [s] data/A.i (66 bytes)
adding [s] data/B.i (66 bytes)
adding [s] data/C.i (66 bytes)
adding [s] data/D.i (66 bytes)
adding [s] data/E.i (66 bytes)
adding [s] phaseroots (43 bytes)
adding [s] 00manifest.i (584 bytes)
adding [s] 00changelog.n (62 bytes) (rust !)
adding [s] 00changelog-b875dfc5.nd (64 bytes) (rust !)
adding [s] 00changelog.d (275 bytes)
adding [s] 00changelog.i (320 bytes)
adding [c] branch2-served (94 bytes)
adding [c] rbc-names-v1 (7 bytes)
adding [c] rbc-revs-v1 (40 bytes)
transferred 1.65 KB in * seconds (* */sec) (glob) (no-rust !)
bundle2-input-part: total payload size 1857 (no-rust !)
transferred 1.78 KB in * seconds (* */sec) (glob) (rust !)
bundle2-input-part: total payload size 2025 (rust !)
bundle2-input-bundle: 1 parts total
updating the branch cache
finished applying clone bundle
query 1; heads
sending batch command
searching for changes
all remote heads known locally
no changes found
sending getbundle command
bundle2-input-bundle: with-transaction
bundle2-input-part: "listkeys" (params: 1 mandatory) supported
bundle2-input-part: "phase-heads" supported
bundle2-input-part: total payload size 24
bundle2-input-bundle: 2 parts total
checking for updated bookmarks
updating to branch default
resolving manifests
branchmerge: False, force: False, partial: False
ancestor: 000000000000, local: 000000000000+, remote: 9bc730a19041
A: remote created -> g
getting A
B: remote created -> g
getting B
C: remote created -> g
getting C
D: remote created -> g
getting D
E: remote created -> g
getting E
5 files updated, 0 files merged, 0 files removed, 0 files unresolved
updating the branch cache
(sent 4 HTTP requests and * bytes; received * bytes in responses) (glob)
$ hg clone --stream http://localhost:$HGPORT stream-clone-explicit --debug
using http://localhost:$HGPORT/
sending capabilities command
sending clonebundles_manifest command
applying clone bundle from http://localhost:$HGPORT1/bundle.hg
bundle2-input-bundle: with-transaction
bundle2-input-part: "stream2" (params: 3 mandatory) supported
applying stream bundle
12 files to transfer, 1.65 KB of data (no-rust !)
14 files to transfer, 1.78 KB of data (rust !)
starting 4 threads for background file closing (?)
starting 4 threads for background file closing (?)
adding [s] data/A.i (66 bytes)
adding [s] data/B.i (66 bytes)
adding [s] data/C.i (66 bytes)
adding [s] data/D.i (66 bytes)
adding [s] data/E.i (66 bytes)
adding [s] phaseroots (43 bytes)
adding [s] 00manifest.i (584 bytes)
adding [s] 00changelog.n (62 bytes) (rust !)
adding [s] 00changelog-b875dfc5.nd (64 bytes) (rust !)
adding [s] 00changelog.d (275 bytes)
adding [s] 00changelog.i (320 bytes)
adding [c] branch2-served (94 bytes)
adding [c] rbc-names-v1 (7 bytes)
adding [c] rbc-revs-v1 (40 bytes)
transferred 1.65 KB in * seconds (* */sec) (glob) (no-rust !)
bundle2-input-part: total payload size 1857 (no-rust !)
transferred 1.78 KB in * seconds (* */sec) (glob) (rust !)
bundle2-input-part: total payload size 2025 (rust !)
bundle2-input-bundle: 1 parts total
updating the branch cache
finished applying clone bundle
query 1; heads
sending batch command
searching for changes
all remote heads known locally
no changes found
sending getbundle command
bundle2-input-bundle: with-transaction
bundle2-input-part: "listkeys" (params: 1 mandatory) supported
bundle2-input-part: "phase-heads" supported
bundle2-input-part: total payload size 24
bundle2-input-bundle: 2 parts total
checking for updated bookmarks
updating to branch default
resolving manifests
branchmerge: False, force: False, partial: False
ancestor: 000000000000, local: 000000000000+, remote: 9bc730a19041
A: remote created -> g
getting A
B: remote created -> g
getting B
C: remote created -> g
getting C
D: remote created -> g
getting D
E: remote created -> g
getting E
5 files updated, 0 files merged, 0 files removed, 0 files unresolved
updating the branch cache
(sent 4 HTTP requests and * bytes; received * bytes in responses) (glob)
#endif
#if stream-v3
$ hg clone http://localhost:$HGPORT stream-clone-implicit --debug
using http://localhost:$HGPORT/
sending capabilities command
sending clonebundles_manifest command
applying clone bundle from http://localhost:$HGPORT1/bundle.hg
bundle2-input-bundle: with-transaction
bundle2-input-part: "stream3-exp" (params: 1 mandatory) supported
applying stream bundle
11 entries to transfer
starting 4 threads for background file closing (?)
starting 4 threads for background file closing (?)
adding [s] data/A.i (66 bytes)
adding [s] data/B.i (66 bytes)
adding [s] data/C.i (66 bytes)
adding [s] data/D.i (66 bytes)
adding [s] data/E.i (66 bytes)
adding [s] phaseroots (43 bytes)
adding [s] 00manifest.i (584 bytes)
adding [s] 00changelog.n (62 bytes) (rust !)
adding [s] 00changelog-b875dfc5.nd (64 bytes) (rust !)
adding [s] 00changelog.d (275 bytes)
adding [s] 00changelog.i (320 bytes)
adding [c] branch2-served (94 bytes)
adding [c] rbc-names-v1 (7 bytes)
adding [c] rbc-revs-v1 (40 bytes)
transferred 1.65 KB in * seconds (* */sec) (glob) (no-rust !)
bundle2-input-part: total payload size 1869 (no-rust !)
transferred 1.78 KB in * seconds (* */sec) (glob) (rust !)
bundle2-input-part: total payload size 2037 (rust !)
bundle2-input-bundle: 1 parts total
updating the branch cache
finished applying clone bundle
query 1; heads
sending batch command
searching for changes
all remote heads known locally
no changes found
sending getbundle command
bundle2-input-bundle: with-transaction
bundle2-input-part: "listkeys" (params: 1 mandatory) supported
bundle2-input-part: "phase-heads" supported
bundle2-input-part: total payload size 24
bundle2-input-bundle: 2 parts total
checking for updated bookmarks
updating to branch default
resolving manifests
branchmerge: False, force: False, partial: False
ancestor: 000000000000, local: 000000000000+, remote: 9bc730a19041
A: remote created -> g
getting A
B: remote created -> g
getting B
C: remote created -> g
getting C
D: remote created -> g
getting D
E: remote created -> g
getting E
5 files updated, 0 files merged, 0 files removed, 0 files unresolved
updating the branch cache
(sent 4 HTTP requests and * bytes; received * bytes in responses) (glob)
$ hg clone --stream http://localhost:$HGPORT stream-clone-explicit --debug
using http://localhost:$HGPORT/
sending capabilities command
sending clonebundles_manifest command
applying clone bundle from http://localhost:$HGPORT1/bundle.hg
bundle2-input-bundle: with-transaction
bundle2-input-part: "stream3-exp" (params: 1 mandatory) supported
applying stream bundle
11 entries to transfer
starting 4 threads for background file closing (?)
starting 4 threads for background file closing (?)
adding [s] data/A.i (66 bytes)
adding [s] data/B.i (66 bytes)
adding [s] data/C.i (66 bytes)
adding [s] data/D.i (66 bytes)
adding [s] data/E.i (66 bytes)
adding [s] phaseroots (43 bytes)
adding [s] 00manifest.i (584 bytes)
adding [s] 00changelog.n (62 bytes) (rust !)
adding [s] 00changelog-b875dfc5.nd (64 bytes) (rust !)
adding [s] 00changelog.d (275 bytes)
adding [s] 00changelog.i (320 bytes)
adding [c] branch2-served (94 bytes)
adding [c] rbc-names-v1 (7 bytes)
adding [c] rbc-revs-v1 (40 bytes)
transferred 1.65 KB in * seconds (* */sec) (glob) (no-rust !)
bundle2-input-part: total payload size 1869 (no-rust !)
transferred 1.78 KB in * seconds (* */sec) (glob) (rust !)
bundle2-input-part: total payload size 2037 (rust !)
bundle2-input-bundle: 1 parts total
updating the branch cache
finished applying clone bundle
query 1; heads
sending batch command
searching for changes
all remote heads known locally
no changes found
sending getbundle command
bundle2-input-bundle: with-transaction
bundle2-input-part: "listkeys" (params: 1 mandatory) supported
bundle2-input-part: "phase-heads" supported
bundle2-input-part: total payload size 24
bundle2-input-bundle: 2 parts total
checking for updated bookmarks
updating to branch default
resolving manifests
branchmerge: False, force: False, partial: False
ancestor: 000000000000, local: 000000000000+, remote: 9bc730a19041
A: remote created -> g
getting A
B: remote created -> g
getting B
C: remote created -> g
getting C
D: remote created -> g
getting D
E: remote created -> g
getting E
5 files updated, 0 files merged, 0 files removed, 0 files unresolved
updating the branch cache
(sent 4 HTTP requests and * bytes; received * bytes in responses) (glob)
#endif