Commit 1a3edcec authored by Douwe Maan's avatar Douwe Maan

Merge branch 'speed-up-merge-request-all-commits-shas' into 'master'

Speed up `all_commit_shas` for new merge requests

See merge request !12706
parents 4ccdb83a 4c0864fd
......@@ -849,7 +849,10 @@ class MergeRequest < ActiveRecord::Base
#
def all_commit_shas
if persisted?
merge_request_diffs.preload(:merge_request_diff_commits).flat_map(&:commit_shas).uniq
column_shas = MergeRequestDiffCommit.where(merge_request_diff: merge_request_diffs).pluck('DISTINCT(sha)')
serialised_shas = merge_request_diffs.where.not(st_commits: nil).flat_map(&:commit_shas)
(column_shas + serialised_shas).uniq
elsif compare_commits
compare_commits.to_a.reverse.map(&:id)
else
......
---
title: Make loading new merge requests (those created after the 9.4 upgrade) faster
merge_request:
author:
......@@ -803,7 +803,7 @@ describe MergeRequest, models: true do
shared_examples 'returning all SHA' do
it 'returns all SHA from all merge_request_diffs' do
expect(subject.merge_request_diffs.size).to eq(2)
expect(subject.all_commit_shas).to eq(all_commit_shas)
expect(subject.all_commit_shas).to match_array(all_commit_shas)
end
end
......
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