Bug #78259 Remove scripts/mysql_system_tables_fix_for_downgrade.sql
Submitted: 28 Aug 2015 9:36 Modified: 2 Oct 2015 19:44
Reporter: Georgi Kodinov Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: Command-line Clients Severity:S3 (Non-critical)
Version:5.7.8 OS:Any
Assigned to: CPU Architecture:Any

[28 Aug 2015 9:36] Georgi Kodinov 
Description:
The scripts/mysql_system_tables_fix_for_downgrade.sql does not cover all of the edge cases and versions of the server binaries and their corresponding system table layouts.

How to repeat:
run against different server versions and observe deficiencies. 

Suggested fix:
Remove the script from the server distribution.
[2 Oct 2015 19:44] Daniel Price 
Posted by developer:
 
Fixed as of the upcoming 5.7.9, 5.8.0 release, and here's the changelog entry:

The mysql_system_tables_fix_for_downgrade.sql script, provided to
facilitate system table alterations when downgrading from MySQL 5.7.6 or
higher, was removed from the MySQL installation directory. The script was
no longer valid for all downgrade paths. For more information, see <xref
linkend="downgrading-to-previous-series"/>. 

The following documentation was also revised:
https://dev.mysql.com/doc/refman/5.7/en/downgrading-to-previous-series.html