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Fixes #3877 - Missing ticket updates on high load in MariaDB/MySQL environments.

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This commit is contained in:
Rolf Schmidt 2021-12-03 11:13:40 +01:00
parent 4905812382
commit 82b61e4811
1 changed files with 7 additions and 0 deletions
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7
config/initializers/db_preferences.rb
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@ -6,6 +6,13 @@ when 'mysql2'
Rails.application.config.db_case_sensitive = false Rails.application.config.db_case_sensitive = false
Rails.application.config.db_like = 'LIKE' Rails.application.config.db_like = 'LIKE'
Rails.application.config.db_null_byte = true Rails.application.config.db_null_byte = true
# Because of missing ticket updates in high load environments
# we changed the transaction isolation level equally to postgres
# to READ COMMITTED which fixed the problem entirely #3877
ActiveRecord::ConnectionAdapters::Mysql2Adapter.set_callback :checkout, :before do |conn|
conn.execute('SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED')
end
when 'postgresql' when 'postgresql'
Rails.application.config.db_4bytes_utf8 = true Rails.application.config.db_4bytes_utf8 = true
Rails.application.config.db_case_sensitive = true Rails.application.config.db_case_sensitive = true