This column's type was set to `integer` which is a 4 bytes integer, allowing a maximum value of 2147483647. We hit this limit when we started scheduling the refreshing of project authorizations for all users. Fixing this required us to change the column type to `bigint`, but it's possible we'll hit this limit again (though we now have a lot more values available). See the following links for more information: * https://gitlab.com/gitlab-org/gitlab-ce/issues/26426 * https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8476 * https://gitlab.com/gitlab-org/gitlab-ce/issues/26194#note_20997056 Screenshot of the increase in 500 errors due to this: