87f2e4d0f8
Summary: This diff adds an ability to optionally pass a `CandidateSelectionHint` to `scs` implementation of the `xrepo-lookup` call, which would help in cases when ancestor commits have multiple mappings in the large repo. Adding this functionality to `scsc xrepo-lookup` is essentially a way to manually fix multi-mapping problems, which could otherwise block Mononoke progress. For more information on multi-mapping problems, see https://fburl.com/gmywf2d6. TLDR is that `synced_commit_mapping` is `1:n` with `n` on the large repo side. When syncing commits, we need a way to disambiguate multi-mapped ancestors. `CandidateSelectionHint` is our way of doing this: it expressed desired properties of the commit we would like Mononoke to choose among the list of multi-mapped candidates. Reviewed By: markbt Differential Revision: D23991178 fbshipit-source-id: 29c90b7910ad1b84ff71964d6609521fded2f987 |
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.. | ||
benchmark | ||
blobimport_lib | ||
blobrepo | ||
blobrepo_utils | ||
blobstore | ||
blobstore_sync_queue | ||
bonsai_git_mapping | ||
bonsai_globalrev_mapping | ||
bonsai_hg_mapping | ||
bookmarks | ||
bulkops | ||
cache_warmup | ||
changesets | ||
cmdlib | ||
cmds | ||
commit_rewriting | ||
common | ||
derived_data | ||
edenapi_server | ||
fastreplay | ||
filenodes | ||
filestore | ||
git | ||
gotham_ext | ||
hgcli | ||
hgproto | ||
hook_tailer | ||
hooks | ||
lfs_import_lib | ||
lfs_protocol | ||
lfs_server | ||
load_limiter | ||
manifest | ||
mercurial | ||
metaconfig | ||
microwave | ||
mononoke_api | ||
mononoke_commitcloud_bookmarks_filler | ||
mononoke_hg_sync_job | ||
mononoke_types | ||
mutable_counters | ||
newfilenodes | ||
permission_checker | ||
phases | ||
pushrebase | ||
reachabilityindex | ||
regenerate_hg_filenodes | ||
repo_client | ||
repo_import | ||
revset | ||
scs_server | ||
segmented_changelog | ||
server | ||
sshrelay | ||
tests | ||
time_window_counter | ||
tunables | ||
unbundle_replay | ||
walker | ||
Cargo.toml | ||
README.md |
Mononoke
Mononoke is a next-generation server for the Mercurial source control system, meant to scale up to accepting thousands of commits every hour across millions of files. It is primarily written in the Rust programming language.
Caveat Emptor
Mononoke is still in early stages of development. We are making it available now because we plan to start making references to it from our other open source projects.
The version that we provide on GitHub does not build yet.
This is because the code is exported verbatim from an internal repository at Facebook, and not all of the scaffolding from our internal repository can be easily extracted. The key areas where we need to shore things up are:
- Full support for a standard
cargo build
. - Open source replacements for Facebook-internal services (blob store, logging etc).
The current goal is to get Mononoke working on Linux. Other Unix-like OSes may be supported in the future