Add SIDEKIQ_MEMORY_KILLER_SHUTDOWN_SIGNAL env var
It looks like SIGTERM may not be enough to shut down a Sidekiq process
when its RSS has gotten too big. This change will allow us to experiment
with sending SIGKILL instead of SIGTERM to Sidekiq processes on
gitlab.com.
See merge request !1812
Remove tag duplicates
Prevention of getting this error:
```
ActiveRecord::RecordNotUnique: PG::Error: ERROR: could not create unique index "index_tags_on_name"
DETAIL: Key (name)=(XSS') is duplicated.
: CREATE UNIQUE INDEX "index_tags_on_name" ON "tags" ("name")
```
This migration fails if there are duplicates:
https://github.com/mbleigh/acts-as-taggable-on/blob/v3.5.0/db/migrate/2_add_missing_unique_indices.rb#L3
See merge request !623
Change the MySQL collation type to utf8_bin to ensure case-sensitive tags are supported
MySQL tables had a collation type of utf8_ci, which makes the name case-insensitive. Previously this migration was run only after indices were built, but it needs to happen before if there is existing data that is case-sensitive. This is an idempotent change, so applying it again in the existing migration (20150425164651) should not change anything.
This is related to !623, but this migration should run before that one.
* Closes#1589
* Closes https://github.com/gitlabhq/gitlabhq/issues/9255
See merge request !625
Conditionally remove indices that may not exist in pre-GitLab v6.7 installations
In pre-GitLab v6.7 installations, the `tagging` indices were directly added to the init schema and not added in a migration. Anyone using this older DB schema may not have these indicies, so only remove them if they are there.
Closes#1593
See merge request !626
Improve handling of large diffs
Diffs with a large number of changed lines time out (504 HTTP error) or
generate a HTML page that's so heavy web browsers struggle with it.
https://github.com/gitlabhq/gitlabhq/pull/5014 introduced limits on
commit line count so that only a safe portion is rendered. This was
later undone by code refactoring in be5b6db8, e0eb4803 and c741fcab.
This patch re-introduces a safe limit on number of lines.
See merge request !539
It looks like SIGTERM may not be enough to shut down a Sidekiq process
when its RSS has gotten too big. This change will allow us to experiment
with sending SIGKILL instead of SIGTERM to Sidekiq processes on
gitlab.com.
Make the first branch pushed to an empty repository the default HEAD
In an empty repository, pushing a new branch not called "master" would leave HEAD in an unknown state, causing ambiguity if another branch were pushed. This could in turn cause a new protected branch to be created and cause the default branch to change.
* Closes#1561
* Closes#1576
* Closes https://github.com/gitlabhq/gitlabhq/issues/8883
See merge request !614
Add Markdown feature specs for markup inside links
It was already working, just want to make sure we don't break it in the future.
See merge request !619