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reftable/stack: add env to disable autocompaction 

In future tests it will be neccesary to create repositories with a set
number of tables. To make this easier, introduce the
`GIT_TEST_REFTABLE_AUTOCOMPACTION` environment variable that, when set
to false, disables autocompaction of reftables.

Signed-off-by: Justin Tobler <jltobler@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Justin Tobler 2024-04-08 16:16:54 +00:00 committed by Junio C Hamano
parent bc91330cec
commit 7c8eb5928f
2 changed files with 24 additions and 0 deletions
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3
refs/reftable-backend.c
View File

@ -18,6 +18,7 @@
#include "../reftable/reftable-merged.h"
#include "../setup.h"
#include "../strmap.h"
#include "parse.h"
#include "refs-internal.h"

/*
@ -247,6 +248,8 @@ static struct ref_store *reftable_be_init(struct repository *repo,
refs->write_options.block_size = 4096;
refs->write_options.hash_id = repo->hash_algo->format_id;
refs->write_options.default_permissions = calc_shared_perm(0666 & ~mask);
refs->write_options.disable_auto_compact =
!git_env_bool("GIT_TEST_REFTABLE_AUTOCOMPACTION", 1);

/*
* Set up the main reftable stack that is hosted in GIT_COMMON_DIR.

21
t/t0610-reftable-basics.sh
View File

@ -299,6 +299,27 @@ test_expect_success 'ref transaction: writes cause auto-compaction' '
test_line_count = 1 repo/.git/reftable/tables.list
'

test_expect_success 'ref transaction: env var disables compaction' '
test_when_finished "rm -rf repo" &&

git init repo &&
test_commit -C repo A &&

start=$(wc -l <repo/.git/reftable/tables.list) &&
iterations=5 &&
expected=$((start + iterations)) &&

for i in $(test_seq $iterations)
do
GIT_TEST_REFTABLE_AUTOCOMPACTION=false \
git -C repo update-ref branch-$i HEAD || return 1
done &&
test_line_count = $expected repo/.git/reftable/tables.list &&

git -C repo update-ref foo HEAD &&
test_line_count -lt $expected repo/.git/reftable/tables.list
'

check_fsync_events () {
local trace="$1" &&
shift &&