I finally understand that you created a simpler test case than mine
that exhibits the problem.
On Tue, Jul 10, 2012 at 12:00 PM, Rich Prohaska <prohaska@stripped> wrote:
> Hello Dmitry,
> My example may have the same result (table copied) but the cause is
> different (new columns are being added to the table, yet the fill
> function sets the ADD and DROP flags).
> On Tue, Jul 10, 2012 at 11:31 AM, Dmitry Lenev <Dmitry.Lenev@stripped>
>> Hello Rich!
>> Thanks for finding and reporting this issue!
>> * Rich Prohaska <prohaska@stripped> [12/07/10 18:11]:
>>> We found a alter table statement that adds columns to a table sets the
>>> ADD and DROP INDEX flags in the alter inplace info struct. When
>>> running the attached mysql test program, innodb's
>>> check_if_supported_inplace_alter gets called with unexpected
>>> handler_flags set (handler_flags = 2115 = ADD_INDEX + DROP_INDEX +
>>> ADD_COLUMN + ALTER_COLUMN_ORDER). The fill_if_supported_inplace_alter
>>> function is probably at fault. We are using
>> Indeed, this is a bug in fill_alter_inplace_info() code.
>> This function incorrectly determines prefix keys as dropped
>> and then re-created by any ALTER TABLE. :(
>> I have reported a bug about it: http://bugs.mysql.com/65865.
>> Thanks once again!
>> Best regards,
>> Dmitry Lenev
>> Dmitry Lenev, Software Developer
>> Oracle Development SPB/MySQL, www.mysql.com
>> Are you MySQL certified? http://www.mysql.com/certification