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体验新版 GitCode,发现更多精彩内容 >>
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630eb119
编写于
11月 04, 2016
作者:
N
Nick Thomas
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Renaming columns requires downtime
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+8
-2
db/migrate/20161103171205_rename_repository_storage_column.rb
...igrate/20161103171205_rename_repository_storage_column.rb
+2
-2
doc/development/what_requires_downtime.md
doc/development/what_requires_downtime.md
+6
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未找到文件。
db/migrate/20161103171205_rename_repository_storage_column.rb
浏览文件 @
630eb119
...
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@@ -5,12 +5,12 @@ class RenameRepositoryStorageColumn < ActiveRecord::Migration
include
Gitlab
::
Database
::
MigrationHelpers
# Set this constant to true if this migration requires downtime.
DOWNTIME
=
fals
e
DOWNTIME
=
tru
e
# When a migration requires downtime you **must** uncomment the following
# constant and define a short and easy to understand explanation as to why the
# migration requires downtime.
# DOWNTIME_REASON = '
'
DOWNTIME_REASON
=
'Renaming the application_settings.repository_storage column
'
# When using the methods "add_concurrent_index" or "add_column_with_default"
# you must disable the use of transactions as these methods can not run in an
...
...
doc/development/what_requires_downtime.md
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630eb119
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@@ -66,6 +66,12 @@ producing errors whenever it tries to use the `dummy` column.
As a result of the above downtime _is_ required when removing a column, even
when using PostgreSQL.
## Renaming Columns
Renaming columns requires downtime as running GitLab instances will continue
using the old column name until a new version is deployed. This can result
in the instance producing errors, which in turn can impact the user experience.
## Changing Column Constraints
Generally changing column constraints requires checking all rows in the table to
...
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