From f981ec18cf4a67aca98901a4c152f07e24ef3c5f Mon Sep 17 00:00:00 2001 From: Jonathan Tan Date: Tue, 3 Sep 2019 12:42:47 -0700 Subject: cache-tree: do not lazy-fetch tentative tree The cache-tree datastructure is used to speed up the comparison between the HEAD and the index, and when the index is updated by a cherry-pick (for example), a tree object that would represent the paths in the index in a directory is constructed in-core, to see if such a tree object exists already in the object store. When the lazy-fetch mechanism was introduced, we converted this "does the tree exist?" check into an "if it does not, and if we lazily cloned, see if the remote has it" call by mistake. Since the whole point of this check is to repair the cache-tree by recording an already existing tree object opportunistically, we shouldn't even try to fetch one from the remote. Pass the OBJECT_INFO_SKIP_FETCH_OBJECT flag to make sure we only check for existence in the local object store without triggering the lazy fetch mechanism. Signed-off-by: Jonathan Tan [jc: rewritten the proposed log message] Signed-off-by: Junio C Hamano diff --git a/cache-tree.c b/cache-tree.c index c22161f..9e59689 100644 --- a/cache-tree.c +++ b/cache-tree.c @@ -407,7 +407,7 @@ static int update_one(struct cache_tree *it, if (repair) { struct object_id oid; hash_object_file(buffer.buf, buffer.len, tree_type, &oid); - if (has_object_file(&oid)) + if (has_object_file_with_flags(&oid, OBJECT_INFO_SKIP_FETCH_OBJECT)) oidcpy(&it->oid, &oid); else to_invalidate = 1; diff --git a/t/t0410-partial-clone.sh b/t/t0410-partial-clone.sh index 6415063..3e434b6 100755 --- a/t/t0410-partial-clone.sh +++ b/t/t0410-partial-clone.sh @@ -492,6 +492,20 @@ test_expect_success 'gc stops traversal when a missing but promised object is re ! grep "$TREE_HASH" out ' +test_expect_success 'do not fetch when checking existence of tree we construct ourselves' ' + rm -rf repo && + test_create_repo repo && + test_commit -C repo base && + test_commit -C repo side1 && + git -C repo checkout base && + test_commit -C repo side2 && + + git -C repo config core.repositoryformatversion 1 && + git -C repo config extensions.partialclone "arbitrary string" && + + git -C repo cherry-pick side1 +' + . "$TEST_DIRECTORY"/lib-httpd.sh start_httpd -- cgit v0.10.2-6-g49f6