sapling/eden/mononoke
Kostia Balytskyi 87f2e4d0f8 scs xrepo-lookup: accept candidate selection hint
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
2020-10-01 17:33:23 -07:00
..
benchmark blobrepo: instantiate segmented changelog as an attribute 2020-09-02 17:20:42 -07:00
blobimport_lib Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
blobrepo mononoke: remove assert_present from Blobstore trait 2020-10-01 01:23:52 -07:00
blobrepo_utils move existing changeset derivation logic to mercurial_derived_data 2020-09-09 07:56:32 -07:00
blobstore mononoke: remove assert_present from Blobstore trait 2020-10-01 01:23:52 -07:00
blobstore_sync_queue shed/sql: make queries! macros work with new Rust mysql client 2020-09-11 06:33:37 -07:00
bonsai_git_mapping improve error messages for mapping length errors 2020-09-21 08:39:12 -07:00
bonsai_globalrev_mapping improve error messages for mapping length errors 2020-09-21 08:39:12 -07:00
bonsai_hg_mapping Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
bookmarks mononoke_api: most bookmark movements errors are request errors 2020-09-21 08:39:12 -07:00
bulkops Regenerate all Cargo.tomls after upgrade to futures 0.3.5 2020-07-06 20:49:43 -07:00
cache_warmup Regenerate all Cargo.tomls after upgrade to futures 0.3.5 2020-07-06 20:49:43 -07:00
changesets Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
cmdlib mononoke: integrate mysql client 2020-09-29 03:09:05 -07:00
cmds mononoke: remove assert_present from Blobstore trait 2020-10-01 01:23:52 -07:00
commit_rewriting scs xrepo-lookup: accept candidate selection hint 2020-10-01 17:33:23 -07:00
common mononoke: integrate mysql client 2020-09-29 03:09:05 -07:00
derived_data mononoke: remove get_fsnode_id 2020-09-18 02:52:47 -07:00
edenapi_server edenapi: Hide edenapi wire types from externally visible API 2020-09-23 17:27:08 -07:00
fastreplay mononoke: deprecate preamble in favor of metadata 2020-09-15 10:28:38 -07:00
filenodes Remove crate_root from Rust dependency info 2020-08-31 14:43:24 -07:00
filestore mononoke: remove assert_present from Blobstore trait 2020-10-01 01:23:52 -07:00
git move existing changeset derivation logic to mercurial_derived_data 2020-09-09 07:56:32 -07:00
gotham_ext gotham_ext: ^ is not ** 2020-09-28 03:41:24 -07:00
hgcli mononoke/hgcli: log hgcli server data to Scuba 2020-10-01 05:22:47 -07:00
hgproto Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
hook_tailer mononoke: allow logging censored scuba accesses to file 2020-09-04 07:37:14 -07:00
hooks mononoke: deprecate preamble in favor of metadata 2020-09-15 10:28:38 -07:00
lfs_import_lib autocargo: regenerate 2020-05-19 16:08:40 -07:00
lfs_protocol mononoke: try to compress values if they above cachelib limit 2020-06-20 01:05:54 -07:00
lfs_server gotham_ext: make StreamBody take an infallible byte stream 2020-09-18 22:49:55 -07:00
load_limiter Regenerate all Cargo.tomls after upgrade to futures 0.3.5 2020-07-06 20:49:43 -07:00
manifest Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
mercurial remove fbsource version, import github version 2020-09-26 09:25:29 -07:00
metaconfig Added S3 blobstore 2020-09-22 04:15:34 -07:00
microwave mononoke: allow logging censored scuba accesses to file 2020-09-04 07:37:14 -07:00
mononoke_api scs xrepo-lookup: accept candidate selection hint 2020-10-01 17:33:23 -07:00
mononoke_commitcloud_bookmarks_filler add setup runbook to README 2020-09-29 05:37:30 -07:00
mononoke_hg_sync_job mononoke: integrate mysql client 2020-09-29 03:09:05 -07:00
mononoke_types third-party/rust: bump third-party code versions 2020-09-26 18:13:40 +02:00
mutable_counters Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
newfilenodes mononoke: add a tunable for ratio of master fallbacks 2020-10-01 01:06:28 -07:00
permission_checker mononoke: deprecate preamble in favor of metadata 2020-09-15 10:28:38 -07:00
phases shed/sql: make queries! macros work with new Rust mysql client 2020-09-11 06:33:37 -07:00
pushrebase Prepare for rustfmt 2.0 2020-09-08 07:33:16 -07:00
reachabilityindex impl LCAHint for Arc<impl LCAHint> 2020-09-11 16:56:13 -07:00
regenerate_hg_filenodes mononoke/regenerate_hg_filenodes: make regenerate_hg_filenodes public (#39) 2020-07-30 06:50:54 -07:00
repo_client mononoke: remove version from CommitSyncRepos 2020-09-25 14:21:07 -07:00
repo_import mononoke: change TestLiveCommitSyncConfig logic 2020-09-28 10:20:16 -07:00
revset Prepare for rustfmt 2.0 2020-09-08 07:33:16 -07:00
scs_server scs xrepo-lookup: accept candidate selection hint 2020-10-01 17:33:23 -07:00
segmented_changelog Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
server adding per repo ACL checking 2020-09-24 08:12:35 -07:00
sshrelay adding per repo ACL checking 2020-09-24 08:12:35 -07:00
tests tests: allow tests to run without network on @mode/opt 2020-10-01 07:25:03 -07:00
time_window_counter mononoke/lfs_server: popularity: add ODS counters, timeouts and tests 2020-07-15 03:39:23 -07:00
tunables mononoke: add a tunable for ratio of master fallbacks 2020-10-01 01:06:28 -07:00
unbundle_replay Update formatter to rustfmt 2.0 2020-09-09 07:52:33 -07:00
walker mononoke: add error context to file content scrub 2020-09-22 05:26:23 -07:00
Cargo.toml third-party/rust: pin criterion to 0.3.1 2020-10-01 09:29:57 -07:00
README.md mononoke: add README.md and the missing pieces for supporting cargo (#13) 2020-02-13 00:12:36 -08:00

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