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| author |  Taylor Blau <me@ttaylorr.com> | 2020-04-13 22:04:12 -0600 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2020-04-15 09:20:27 -0700 |
| commit | fdbde82fe523374b3c5d1f0f01f3c43dcaca9465 (patch) | |
| tree | 4218bdad84063c7b7ce921c53c0c6f57343e3aaa /Documentation | |
| parent | builtin/commit-graph.c: support for '--split[=<strategy>]' (diff) | |
| download | tgif-fdbde82fe523374b3c5d1f0f01f3c43dcaca9465.tar.xz | |
builtin/commit-graph.c: introduce split strategy 'no-merge'
In the previous commit, we laid the groundwork for supporting different
splitting strategies. In this commit, we introduce the first splitting
strategy: 'no-merge'.
Passing '--split=no-merge' is useful for callers which wish to write a
new incremental commit-graph, but do not want to spend effort condensing
the incremental chain [1]. Previously, this was possible by passing
'--size-multiple=0', but this no longer the case following 63020f175f
(commit-graph: prefer default size_mult when given zero, 2020-01-02).
When '--split=no-merge' is given, the commit-graph machinery will never
condense an existing chain, and it will always write a new incremental.
[1]: This might occur when, for example, a server administrator running
some program after each push may want to ensure that each job runs
proportional in time to the size of the push, and does not "jump" when
the commit-graph machinery decides to trigger a merge.
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/git-commit-graph.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/git-commit-graph.txt b/Documentation/git-commit-graph.txt index 10d757c5cc..a4c4a641e5 100644 --- a/Documentation/git-commit-graph.txt +++ b/Documentation/git-commit-graph.txt @@ -63,6 +63,11 @@ chain of multiple commit-graph files stored in strategy and other splitting options. The new commits not already in the commit-graph are added in a new "tip" file. This file is merged with the existing file if the following merge conditions are met: +* If `--split=no-merge` is specified, a merge is never performed, and +the remaining options are ignored. A bare `--split` defers to the +remaining options. (Note that merging a chain of commit graphs replaces +the existing chain with a length-1 chain where the first and only +incremental holds the entire graph). + * If `--size-multiple=<X>` is not specified, let `X` equal 2. If the new tip file would have `N` commits and the previous tip has `M` commits and |