Add latest changes from gitlab-org/gitlab@master

21 files changed, 107 insertions, 183 deletions

diff --git a/.gitlab/issue_templates/Feature Flag Roll Out.md b/.gitlab/issue_templates/Feature Flag Roll Out.md
index 90c56417dbc..e0de8fab4a7 100644
--- a/.gitlab/issue_templates/Feature Flag Roll Out.md
+++ b/.gitlab/issue_templates/Feature Flag Roll Out.md
@@ -34,6 +34,7 @@ If applicable, any groups/projects that are happy to have this feature turned on
 - [ ] Test on staging
 - [ ] Ensure that documentation has been updated
 - [ ] Enable on GitLab.com for individual groups/projects listed above and verify behaviour
+- [ ] Coordinate a time to enable the flag with `#production` and `#g_delivery` on slack.
 - [ ] Announce on the issue an estimated time this will be enabled on GitLab.com
 - [ ] Enable on GitLab.com by running chatops command in `#production`
 - [ ] Cross post chatops slack command to `#support_gitlab-com` and in your team channel
diff --git a/CHANGELOG-EE.md b/CHANGELOG-EE.md
index f3cb9e175c2..fd4ea7af569 100644
--- a/CHANGELOG-EE.md
+++ b/CHANGELOG-EE.md
@@ -4215,7 +4215,7 @@ Please view this file on the master branch, on stable branches it's out of date.
 ## 8.14.0 (2016-11-22)
 
 - Added Backfill service for Geo. !861
-- Fix for autosuggested approvers(https://gitlab.com/gitlab-org/gitlab-ee/issues/1273).
+- Fix for autosuggested approvers(https://gitlab.com/gitlab-org/gitlab/issues/1273).
 - Gracefully recover from previously failed rebase.
 - Disable retries for remote mirror update worker. !848
 - Fix Approvals API documentation.
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f1a38a2625f..eedbbb67af3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8367,7 +8367,7 @@ entry.
 - Reinstate is_admin flag in users api when authenticated user is an admin. !12211 (rickettm)
 - Fix edit button for deploy keys available from other projects. !12301 (Alexander Randa)
 - Fix passing CI_ENVIRONMENT_NAME and CI_ENVIRONMENT_SLUG for CI_ENVIRONMENT_URL. !12344
-- Disable environment list refresh due to bug https://gitlab.com/gitlab-org/gitlab-ee/issues/2677. !12347
+- Disable environment list refresh due to bug https://gitlab.com/gitlab-org/gitlab/issues/2677. !12347
 - Standardize timeline note margins across different viewport sizes. !12364
 - Fix Ordered Task List Items. !31483 (Jared Deckard <jared.deckard@gmail.com>)
 - Upgrade dependency to Go 1.8.3. !31943
diff --git a/Gemfile b/Gemfile
index e657b2cd611..e00b95fea3a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -311,7 +311,7 @@ gem 'gettext', '~> 3.2.2', require: false, group: :development
 gem 'batch-loader', '~> 1.4.0'
 
 # Perf bar
-# https://gitlab.com/gitlab-org/gitlab-ee/issues/13996
+# https://gitlab.com/gitlab-org/gitlab/issues/13996
 gem 'gitlab-peek', '~> 0.0.1', require: 'peek'
 
 # Snowplow events tracking
diff --git a/app/assets/javascripts/notes/stores/mutations.js b/app/assets/javascripts/notes/stores/mutations.js
index fa44ef2d057..e70f0238316 100644
--- a/app/assets/javascripts/notes/stores/mutations.js
+++ b/app/assets/javascripts/notes/stores/mutations.js
@@ -33,10 +33,11 @@ export default {
   },
 
   [types.ADD_NEW_REPLY_TO_DISCUSSION](state, note) {
-    const noteObj = utils.findNoteObjectById(state.discussions, note.discussion_id);
+    const discussion = utils.findNoteObjectById(state.discussions, note.discussion_id);
+    const existingNote = discussion && utils.findNoteObjectById(discussion.notes, note.id);
 
-    if (noteObj) {
-      noteObj.notes.push(note);
+    if (discussion && !existingNote) {
+      discussion.notes.push(note);
     }
   },
 
diff --git a/app/assets/stylesheets/framework/header.scss b/app/assets/stylesheets/framework/header.scss
index ca737c53318..1195e467192 100644
--- a/app/assets/stylesheets/framework/header.scss
+++ b/app/assets/stylesheets/framework/header.scss
@@ -523,6 +523,7 @@
     margin-top: 4px;
     color: $gl-text-color;
     left: auto;
+    max-height: $dropdown-max-height-lg;
 
     li.current-user {
       padding: $dropdown-item-padding-y $dropdown-item-padding-x;
diff --git a/app/views/layouts/header/_current_user_dropdown.html.haml b/app/views/layouts/header/_current_user_dropdown.html.haml
index 808290afcad..b636725fabf 100644
--- a/app/views/layouts/header/_current_user_dropdown.html.haml
+++ b/app/views/layouts/header/_current_user_dropdown.html.haml
@@ -21,6 +21,23 @@
   - if current_user_menu?(:settings)
     %li
       = link_to s_("CurrentUser|Settings"), profile_path, data: { qa_selector: 'settings_link' }
+
+  - if current_user_menu?(:help)
+    %li.divider.d-md-none
+    %li.d-md-none
+      = link_to _("Help"), help_path
+    %li.d-md-none
+      = link_to _("Support"), support_url
+    = render_if_exists "shared/learn_gitlab_menu_item"
+  %li.d-md-none
+    = link_to _("Submit feedback"), "https://about.gitlab.com/submit-feedback"
+  - if current_user_menu?(:help) || current_user_menu?(:settings) || current_user_menu?(:profile)
+    = render 'shared/user_dropdown_contributing_link'
+  = render_if_exists 'shared/user_dropdown_instance_review'
+  - if Gitlab.com?
+    %li.js-canary-link.d-md-none
+      = link_to _("Switch to GitLab Next"), "https://next.gitlab.com/"
+
   - if current_user_menu?(:sign_out)
     %li.divider
     %li
diff --git a/app/views/layouts/header/_default.html.haml b/app/views/layouts/header/_default.html.haml
index 1911673b63a..d8697be7f7a 100644
--- a/app/views/layouts/header/_default.html.haml
+++ b/app/views/layouts/header/_default.html.haml
@@ -33,9 +33,9 @@
           - if current_user
             = render 'layouts/header/new_dropdown'
           - if header_link?(:search)
-            %li.nav-item.d-none.d-sm-none.d-md-block.m-auto
+            %li.nav-item.d-none.d-lg-block.m-auto
               = render 'layouts/search' unless current_controller?(:search)
-            %li.nav-item.d-inline-block.d-sm-none.d-md-none
+            %li.nav-item.d-inline-block.d-lg-none
               = link_to search_path_url, title: _('Search'), aria: { label: _('Search') }, data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
                 = sprite_icon('search', size: 16)
           - if header_link?(:issues)
@@ -58,7 +58,7 @@
                 = sprite_icon('todo-done', size: 16)
                 %span.badge.badge-pill.todos-count{ class: ('hidden' if todos_pending_count.zero?) }
                   = todos_count_format(todos_pending_count)
-          %li.nav-item.header-help.dropdown
+          %li.nav-item.header-help.dropdown.d-none.d-md-block
             = link_to help_path, class: 'header-help-dropdown-toggle', data: { toggle: "dropdown" } do
               = sprite_icon('question', size: 16)
               = sprite_icon('angle-down', css_class: 'caret-down')
diff --git a/app/views/layouts/nav/_dashboard.html.haml b/app/views/layouts/nav/_dashboard.html.haml
index 015ba13be05..b20792a4417 100644
--- a/app/views/layouts/nav/_dashboard.html.haml
+++ b/app/views/layouts/nav/_dashboard.html.haml
@@ -10,37 +10,26 @@
         = render "layouts/nav/projects_dropdown/show"
 
   - if dashboard_nav_link?(:groups)
-    = nav_link(controller: ['dashboard/groups', 'explore/groups'], html_options: { id: 'nav-groups-dropdown', class: "home dropdown header-groups qa-groups-dropdown", data: { track_label: "groups_dropdown", track_event: "click_dropdown", track_value: "" } }) do
+    = nav_link(controller: ['dashboard/groups', 'explore/groups'], html_options: { id: 'nav-groups-dropdown', class: "d-none d-md-block home dropdown header-groups qa-groups-dropdown", data: { track_label: "groups_dropdown", track_event: "click_dropdown", track_value: "" } }) do
       %button.btn{ type: 'button', data: { toggle: "dropdown" } }
         = _('Groups')
         = sprite_icon('angle-down', css_class: 'caret-down')
       .dropdown-menu.frequent-items-dropdown-menu
         = render "layouts/nav/groups_dropdown/show"
 
-  - if dashboard_nav_link?(:activity)
-    = nav_link(path: 'dashboard#activity', html_options: { class: ["d-none d-xl-block", ("d-lg-block" unless has_extra_nav_icons?)] }) do
-      = link_to activity_dashboard_path, class: 'dashboard-shortcuts-activity' do
-        = _('Activity')
-
-  - if dashboard_nav_link?(:milestones)
-    = nav_link(controller: 'dashboard/milestones', html_options: { class: ["d-none d-xl-block", ("d-lg-block" unless has_extra_nav_icons?)] }) do
-      = link_to dashboard_milestones_path, class: 'dashboard-shortcuts-milestones' do
-        = _('Milestones')
-
-  - if dashboard_nav_link?(:snippets)
-    = nav_link(controller: 'dashboard/snippets', html_options: { class: ["d-none d-xl-block", ("d-lg-block" unless has_extra_nav_icons?)] }) do
-      = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets qa-snippets-link' do
-        = _('Snippets')
-
   = render_if_exists 'layouts/nav/sidebar/analytics_link'
 
   - if any_dashboard_nav_link?([:groups, :milestones, :activity, :snippets])
-    %li.header-more.dropdown.d-xl-none{ class: ('d-lg-none' unless has_extra_nav_icons?) }
+    %li.header-more.dropdown
       %a{ href: "#", data: { toggle: "dropdown" } }
         = _('More')
         = sprite_icon('angle-down', css_class: 'caret-down')
       .dropdown-menu
         %ul
+          - if dashboard_nav_link?(:groups)
+            %li.d-md-none
+              = link_to dashboard_groups_path do
+                = _('Groups')
           - if dashboard_nav_link?(:activity)
             = nav_link(path: 'dashboard#activity') do
               = link_to activity_dashboard_path do
@@ -53,20 +42,20 @@
 
           - if dashboard_nav_link?(:snippets)
             = nav_link(controller: 'dashboard/snippets') do
-              = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets' do
+              = link_to dashboard_snippets_path, class: 'dashboard-shortcuts-snippets qa-snippets-link' do
                 = _('Snippets')
 
           = render_if_exists 'layouts/nav/sidebar/analytics_more_link'
 
-          %li.dropdown.d-lg-none
+          %li.dropdown
             = render_if_exists 'dashboard/nav_link_list'
           - if can?(current_user, :read_instance_statistics)
-            = nav_link(controller: [:conversational_development_index, :cohorts], html_options: { class: 'd-lg-none' }) do
+            = nav_link(controller: [:conversational_development_index, :cohorts]) do
               = link_to instance_statistics_root_path do
                 = _('Instance Statistics')
           - if current_user.admin?
             = nav_link(controller: 'admin/dashboard') do
-              = link_to admin_root_path, class: 'd-lg-none admin-icon qa-admin-area-link' do
+              = link_to admin_root_path, class: 'admin-icon qa-admin-area-link d-xl-none' do
                 = _('Admin Area')
             - if Feature.enabled?(:user_mode_in_session)
               - if header_link?(:admin_mode)
@@ -79,45 +68,19 @@
                     = _('Enter admin mode')
           - if Gitlab::Sherlock.enabled?
             %li
-              = link_to sherlock_transactions_path, class: 'd-lg-none admin-icon' do
+              = link_to sherlock_transactions_path, class: 'admin-icon' do
                 = _('Sherlock Transactions')
 
+  - if current_user.admin?
+    = nav_link(controller: 'admin/dashboard', html_options: { class: "d-none d-xl-block"}) do
+      = link_to admin_root_path, class: 'admin-icon qa-admin-area-link', title: _('Admin Area'), aria: { label: _('Admin Area') }, data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
+        = sprite_icon('admin', size: 18)
+
+
   -# Shortcut to Dashboard > Projects
   - if dashboard_nav_link?(:projects)
     %li.hidden
       = link_to dashboard_projects_path, class: 'dashboard-shortcuts-projects' do
         = _('Projects')
 
-  - if current_controller?('ide')
-    %li.line-separator.d-none.d-sm-block
-      = nav_link(controller: 'ide') do
-        = link_to '#', class: 'dashboard-shortcuts-web-ide' do
-          = _('Web IDE')
-
-  %li.dropdown{ class: 'd-none d-lg-block' }
-    = render_if_exists 'dashboard/nav_link'
-  - if can?(current_user, :read_instance_statistics)
-    = nav_link(controller: [:conversational_development_index, :cohorts], html_options: { class: "d-none d-lg-block d-xl-block"}) do
-      = link_to instance_statistics_root_path, title: _('Instance Statistics'), aria: { label: _('Instance Statistics') }, data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
-        = sprite_icon('chart', size: 18)
-  - if current_user.admin?
-    = nav_link(controller: 'admin/dashboard', html_options: { class: "d-none d-lg-block d-xl-block"}) do
-      = link_to admin_root_path, class: 'admin-icon qa-admin-area-link', title: _('Admin Area'), aria: { label: _('Admin Area') }, data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
-        = sprite_icon('admin', size: 18)
-
-  - if Feature.enabled?(:user_mode_in_session)
-    - if header_link?(:admin_mode)
-      = nav_link(controller: 'admin/sessions', html_options: { class: "d-none d-lg-block d-xl-block"}) do
-        = link_to destroy_admin_session_path, title: _('Leave admin mode'), aria: { label: _('Leave admin mode') }, data: { toggle: 'tooltip', placement: 'bottom', container: 'body' } do
-          = sprite_icon('lock-open', size: 18)
-    - elsif current_user.admin?
-      = nav_link(controller: 'admin/sessions', html_options: { class: "d-none d-lg-block d-xl-block"}) do
-        = link_to new_admin_session_path, title: _('Enter admin mode'), aria: { label: _('Enter admin mode') }, data: { toggle: 'tooltip', placement: 'bottom', container: 'body' } do
-          = sprite_icon('lock', size: 18)
-
-  - if Gitlab::Sherlock.enabled?
-    %li
-      = link_to sherlock_transactions_path, class: 'admin-icon d-none d-lg-block d-xl-block', title: _('Sherlock Transactions'),
-        data: {toggle: 'tooltip', placement: 'bottom', container: 'body'} do
-        = icon('tachometer fw')
   = render_if_exists 'layouts/nav/geo_primary_node_url'
diff --git a/changelogs/unreleased/23400-fix-duplicate-replies.yml b/changelogs/unreleased/23400-fix-duplicate-replies.yml
new file mode 100644
index 00000000000..26b24c66085
--- /dev/null
+++ b/changelogs/unreleased/23400-fix-duplicate-replies.yml
@@ -0,0 +1,5 @@
+---
+title: Fix new discussion replies sometimes showing up twice
+merge_request: 17255
+author:
+type: fixed
diff --git a/changelogs/unreleased/31329-hidden-nav-content.yml b/changelogs/unreleased/31329-hidden-nav-content.yml
new file mode 100644
index 00000000000..2c85c8df2e3
--- /dev/null
+++ b/changelogs/unreleased/31329-hidden-nav-content.yml
@@ -0,0 +1,5 @@
+---
+title: Update top nav bar to fit all content in at all screen sizes
+merge_request:
+author:
+type: fixed
diff --git a/changelogs/unreleased/9801-epic-copy-link.yml b/changelogs/unreleased/9801-epic-copy-link.yml
new file mode 100644
index 00000000000..c3d24010a59
--- /dev/null
+++ b/changelogs/unreleased/9801-epic-copy-link.yml
@@ -0,0 +1,5 @@
+---
+title: Added 'copy link' in epic comment dropdown.
+merge_request: 17224
+author:
+type: added
diff --git a/changelogs/unreleased/ak-unhandled-exception-in-health-checks.yml b/changelogs/unreleased/ak-unhandled-exception-in-health-checks.yml
new file mode 100644
index 00000000000..a738cbb0369
--- /dev/null
+++ b/changelogs/unreleased/ak-unhandled-exception-in-health-checks.yml
@@ -0,0 +1,5 @@
+---
+title: Catch unhandled exceptions in health checks
+merge_request: 17694
+author:
+type: fixed
diff --git a/db/post_migrate/20190911251732_sync_issuables_state_id.rb b/db/post_migrate/20190911251732_sync_issuables_state_id.rb
index 56e764a1ae2..4865e98a75e 100644
--- a/db/post_migrate/20190911251732_sync_issuables_state_id.rb
+++ b/db/post_migrate/20190911251732_sync_issuables_state_id.rb
@@ -2,7 +2,7 @@
 
 # Sync remaining records for issues/merge_requests tables where state_id
 # is still null.
-# For more information check: https://gitlab.com/gitlab-org/gitlab-ee/issues/26823
+# For more information check: https://gitlab.com/gitlab-org/gitlab/issues/26823
 # It creates a temporary index before performing the UPDATES to sync values.
 #
 # In 09-11-2019 we have the following numbers for records with state_id == nil:
diff --git a/doc/development/ee_features.md b/doc/development/ee_features.md
index 22dd9be073f..f89371f38ce 100644
--- a/doc/development/ee_features.md
+++ b/doc/development/ee_features.md
@@ -28,77 +28,13 @@ to something that evaluates as `false`. The same works for running tests
 
 ## Separation of EE code
 
-We want a [single code base][] eventually, but before we reach the goal,
-we still need to merge changes from GitLab CE to EE. To help us get there,
-we should make sure that we no longer edit CE files in place in order to
-implement EE features.
-
-Instead, all EE code should be put inside the `ee/` top-level directory. The
+All EE code should be put inside the `ee/` top-level directory. The
 rest of the code should be as close to the CE files as possible.
 
-[single code base]: https://gitlab.com/gitlab-org/gitlab/issues/2952#note_41016454
-
-### EE-specific comments
-
-When complete separation can't be achieved with the `ee/` directory, you can wrap
-code in EE specific comments to designate the difference from CE/EE and add
-some context for someone resolving a conflict.
-
-```rb
-# EE-specific start
-stub_licensed_features(variable_environment_scope: true)
-# EE specific end
-```
-
-```haml
--# EE-specific start
-= render 'ci/variables/environment_scope', form_field: form_field, variable: variable
--# EE-specific end
-```
-
-EE-specific comments should not be backported to CE.
-
-**Note:** This is only meant as a workaround, we should follow up and
-resolve this soon.
-
-### Detection of EE-only files
-
-For each commit (except on `master`), the `ee-files-location-check` CI job tries
-to detect if there are any new files that are EE-only. If any file is detected,
-the job fails with an explanation of why and what to do to make it pass.
-
-Basically, the fix is simple: `git mv <file> ee/<file>`.
-
-#### How to name your branches?
-
-For any EE branch, the job will try to detect its CE counterpart by removing any
-`ee-` prefix or `-ee` suffix from the EE branch name, and matching the last
-branch that contains it.
-
-For instance, from the EE branch `new-shiny-feature-ee` (or
-`ee-new-shiny-feature`), the job would find the corresponding CE branches:
-
-- `new-shiny-feature`
-- `ce-new-shiny-feature`
-- `new-shiny-feature-ce`
-- `my-super-new-shiny-feature-in-ce`
-
-#### Whitelist some EE-only files that cannot be moved to `ee/`
-
-The `ee-files-location-check` CI job provides a whitelist of files or folders
-that cannot or should not be moved to `ee/`. Feel free to open an issue to
-discuss adding a new file/folder to this whitelist.
-
-For instance, it was decided that moving EE-only files from `qa/` to `ee/qa/`
-would make it difficult to build the `gitLab-{ce,ee}-qa` Docker images and it
-was [not worth the complexity].
-
-[not worth the complexity]: https://gitlab.com/gitlab-org/gitlab/issues/4997#note_59764702
-
 ### EE-only features
 
 If the feature being developed is not present in any form in CE, we don't
-need to put the codes under `EE` namespace. For example, an EE model could
+need to put the code under the `EE` namespace. For example, an EE model could
 go into: `ee/app/models/awesome.rb` using `Awesome` as the class name. This
 is applied not only to models. Here's a list of other examples:
 
@@ -116,7 +52,7 @@ is applied not only to models. Here's a list of other examples:
 - `ee/app/views/foo.html.haml`
 - `ee/app/views/foo/_bar.html.haml`
 
-This works because for every path that are present in CE's eager-load/auto-load
+This works because for every path that is present in CE's eager-load/auto-load
 paths, we add the same `ee/`-prepended path in [`config/application.rb`].
 This also applies to views.
 
@@ -441,13 +377,10 @@ CE and EE.
 
 The advantages of this:
 
-- Minimal code difference between CE and EE.
-- Very clear hints about where we're extending EE views while reading CE codes.
+- Very clear hints about where we're extending EE views while reading CE code.
 
 The disadvantage of this:
 
-- Slightly more work while developing EE features, because now we need to
-  port `render_if_exists` to CE.
 - If we have typos in the partial name, it would be silently ignored.
 
 ##### Caveats
@@ -858,7 +791,7 @@ end
 ### Code in `spec/`
 
 When you're testing EE-only features, avoid adding examples to the
-existing CE specs. Also do no change existing CE examples, since they
+existing CE specs. Also do not change existing CE examples, since they
 should remain working as-is when EE is running without a license.
 
 Instead place EE specs in the `ee/spec` folder.
@@ -992,10 +925,8 @@ For regular JS files, the approach is similar.
 
 ## SCSS code in `assets/stylesheets`
 
-To separate EE-specific styles in SCSS files, if a component you're adding styles for
-is limited to only EE, it is better to have a separate SCSS file in appropriate directory
-within `app/assets/stylesheets`.
-See [backporting changes](#backporting-changes-from-ee-to-ce) for instructions on how to merge changes safely.
+If a component you're adding styles for is limited to EE, it is better to have a
+separate SCSS file in an appropriate directory within `app/assets/stylesheets`.
 
 In some cases, this is not entirely possible or creating dedicated SCSS file is an overkill,
 e.g. a text style of some component is different for EE. In such cases,
@@ -1037,24 +968,6 @@ to avoid conflicts during CE to EE merge.
 // EE-specific end
 ```
 
-## Backporting changes from EE to CE
-
-Until the work completed to merge the ce and ee codebases, which is tracked on [epic &802](https://gitlab.com/groups/gitlab-org/-/epics/802), there exists times in which some changes for EE require specific changes to the CE
-code base.  Examples of backports include the following:
-
-- Features intended or originally built for EE that are later decided to move to CE
-- Sometimes some code in CE may impact the EE feature
-
-Here is a workflow to make sure those changes end up backported safely into CE too.
-
-1. **Make your changes in the EE branch.** If possible, keep a separated commit (to be squashed) to help backporting and review.
-1. **Open merge request to EE project.**
-1. **Apply the changes you made to CE files in a branch of the CE project.** (Tip: Use `patch` with the diff from your commit in EE branch)
-1. **Open merge request to CE project**, referring it's a backport of EE changes and link to MR open in EE.
-1. Once EE MR is merged, the MR towards CE can be merged. **But not before**.
-
-**Note:** regarding SCSS, make sure the files living outside `/ee/` don't diverge between CE and EE projects.
-
 ## GitLab-svgs
 
 Conflicts in `app/assets/images/icons.json` or `app/assets/images/icons.svg` can
diff --git a/doc/development/testing_guide/frontend_testing.md b/doc/development/testing_guide/frontend_testing.md
index ddb15b646cc..2d33f3102b6 100644
--- a/doc/development/testing_guide/frontend_testing.md
+++ b/doc/development/testing_guide/frontend_testing.md
@@ -516,11 +516,6 @@ glob otherwise your shell may split it into multiple arguments:
 yarn karma -f 'spec/javascripts/ide/**/file_spec.js'
 ```
 
-## RSpec feature integration tests
-
-Information on setting up and running RSpec integration tests with
-[Capybara] can be found in the [Testing Best Practices](best_practices.md).
-
 ## Frontend test fixtures
 
 Code that is added to HAML templates (in `app/views/`) or makes Ajax requests to the backend has tests that require HTML or JSON from the backend.
@@ -598,7 +593,6 @@ end
 [karma]: http://karma-runner.github.io/
 [vue-test]: ../fe_guide/vue.md#testing-vue-components
 [rspec]: https://github.com/rspec/rspec-rails#feature-specs
-[capybara]: https://github.com/teamcapybara/capybara
 [jasmine]: https://jasmine.github.io/
 
 ## Overview of Frontend Testing Levels
@@ -955,7 +949,11 @@ graph RL
 In contrast to [frontend integration tests](#frontend-integration-tests), feature tests make requests against the real backend instead of using fixtures.
 This also implies that database queries are executed which makes this category significantly slower.
 
-See also the [RSpec testing guidelines](../testing_guide/best_practices.md#rspec).
+See also
+
+- The [RSpec testing guidelines](../testing_guide/best_practices.md#rspec).
+- System / Feature tests in the [Testing Best Practices](best_practices.md#system--feature-tests).
+- [Issue #26159](https://gitlab.com/gitlab-org/gitlab/issues/26159) which aims at combine those guidelines with this page.
 
 ```mermaid
 graph RL
diff --git a/doc/install/installation.md b/doc/install/installation.md
index 41ce6cb2f8b..25501dd7b58 100644
--- a/doc/install/installation.md
+++ b/doc/install/installation.md
@@ -484,6 +484,9 @@ sudo -u git -H git config --global repack.writeBitmaps true
 # Enable push options
 sudo -u git -H git config --global receive.advertisePushOptions true
 
+# Enable fsyncObjectFiles to reduce risk of repository corruption if the server crashes
+sudo -u git -H git config --global core.fsyncObjectFiles true
+
 # Configure Redis connection settings
 sudo -u git -H cp config/resque.yml.example config/resque.yml
 
diff --git a/lib/gitlab/health_checks/simple_abstract_check.rb b/lib/gitlab/health_checks/simple_abstract_check.rb
index 5a1e8c2a1dd..bc02f0da98d 100644
--- a/lib/gitlab/health_checks/simple_abstract_check.rb
+++ b/lib/gitlab/health_checks/simple_abstract_check.rb
@@ -14,6 +14,8 @@ module Gitlab
         else
           HealthChecks::Result.new(false, "unexpected #{human_name} check result: #{check_result}")
         end
+      rescue => e
+        HealthChecks::Result.new(false, "unexpected #{human_name} check result: #{e}")
       end
 
       def metrics
diff --git a/spec/features/dashboard/active_tab_spec.rb b/spec/features/dashboard/active_tab_spec.rb
index 92d0c0c9260..ee85c136190 100644
--- a/spec/features/dashboard/active_tab_spec.rb
+++ b/spec/features/dashboard/active_tab_spec.rb
@@ -27,20 +27,4 @@ RSpec.describe 'Dashboard Active Tab', :js do
       subject { visit dashboard_groups_path }
     end
   end
-
-  context 'on activity projects' do
-    it_behaves_like 'page has active tab', 'Activity' do
-      subject { visit activity_dashboard_path }
-    end
-  end
-
-  context 'on instance statistics' do
-    subject { visit instance_statistics_root_path }
-
-    it 'shows Instance Statistics` as active' do
-      subject
-
-      expect(find('.navbar-sub-nav li.active')).to have_link('Instance Statistics')
-    end
-  end
 end
diff --git a/spec/javascripts/notes/stores/mutation_spec.js b/spec/javascripts/notes/stores/mutation_spec.js
index 4a640d589fb..ade4725dd68 100644
--- a/spec/javascripts/notes/stores/mutation_spec.js
+++ b/spec/javascripts/notes/stores/mutation_spec.js
@@ -48,9 +48,22 @@ describe('Notes Store mutations', () => {
   });
 
   describe('ADD_NEW_REPLY_TO_DISCUSSION', () => {
+    const newReply = Object.assign({}, note, { discussion_id: discussionMock.id });
+
+    let state;
+
+    beforeEach(() => {
+      state = { discussions: [{ ...discussionMock }] };
+    });
+
     it('should add a reply to a specific discussion', () => {
-      const state = { discussions: [discussionMock] };
-      const newReply = Object.assign({}, note, { discussion_id: discussionMock.id });
+      mutations.ADD_NEW_REPLY_TO_DISCUSSION(state, newReply);
+
+      expect(state.discussions[0].notes.length).toEqual(4);
+    });
+
+    it('should not add the note if it already exists in the discussion', () => {
+      mutations.ADD_NEW_REPLY_TO_DISCUSSION(state, newReply);
       mutations.ADD_NEW_REPLY_TO_DISCUSSION(state, newReply);
 
       expect(state.discussions[0].notes.length).toEqual(4);
diff --git a/spec/lib/gitlab/health_checks/simple_check_shared.rb b/spec/lib/gitlab/health_checks/simple_check_shared.rb
index b4a8a4e6ab6..c3d55a11909 100644
--- a/spec/lib/gitlab/health_checks/simple_check_shared.rb
+++ b/spec/lib/gitlab/health_checks/simple_check_shared.rb
@@ -57,5 +57,13 @@ shared_context 'simple_check' do |metrics_prefix, check_name, success_result|
 
       it { is_expected.to have_attributes(success: false, message: "#{described_class.human_name} check timed out") }
     end
+
+    context 'Check is raising an unhandled exception' do
+      before do
+        allow(described_class).to receive(:check ).and_raise "unexpected error"
+      end
+
+      it { is_expected.to have_attributes(success: false, message: "unexpected #{described_class.human_name} check result: unexpected error") }
+    end
   end
 end