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changeset 50845:5c3d07950bac

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transaction: actually delete file created during the transaction on rollback Transaction currently has two modes: - one where file created during the transaction are deleted on rollback, - one where file created during the transaction are truncated to 0 on rollback. Before this change, `hg rollback` and `hg recover` are using the "delete" mode and transaction abort is using the "truncate" option. This difference is never really explained. A long time ago, there was two code paths, with this divergence existing for unclear reasons. When the two code paths got merged into a single one, a boolean argument have been added to preserve this divergence, mostly probably as a cargo cult. The divergence is weird and induce bad surprises, and the truncate behavior is a bit odds, introducing other bad surprises (e.g. 08ecbdba186f) So solve this, we stop using the "truncate" behavior and unify on the "delete" behavior. Despite being currently more "common", the truncate behavior seems less natural, resulting in the transaction leaving empty file around. This is landed on default, early in the cycle, to help us catch problems that could emerge.
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Mon, 24 Jul 2023 05:13:52 +0200
parents 53d77f96e049
children 3ccef7902070
files mercurial/transaction.py tests/test-transaction-rollback-on-revlog-split.t
diffstat 2 files changed, 1 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/mercurial/transaction.py	Fri Jul 28 17:08:37 2023 +0100
+++ b/mercurial/transaction.py	Mon Jul 24 05:13:52 2023 +0200
@@ -867,7 +867,7 @@
                 self._vfsmap,
                 entries,
                 self._backupentries,
-                False,
+                unlink=True,
                 checkambigfiles=self._checkambigfiles,
             )
             self._report(_(b"rollback completed\n"))
--- a/tests/test-transaction-rollback-on-revlog-split.t	Fri Jul 28 17:08:37 2023 +0100
+++ b/tests/test-transaction-rollback-on-revlog-split.t	Mon Jul 24 05:13:52 2023 +0200
@@ -396,7 +396,6 @@
 The split was rollback
 
   $ f -s .hg/store/data*/file*
-  .hg/store/data/file.d: size=0
   .hg/store/data/file.i: size=1174