maria-developers team mailing list archive

[Nikita Malyavin <nikitamalyavin@xxxxxxxxx>]

On Mon, 15 Nov 2021 at 16:07, Sergei Golubchik <serg@xxxxxxxxxxx> wrote:

> Hi, Nikita!
>
> On Nov 15, Nikita Malyavin wrote:
> > revision-id: 9277b838aad (mariadb-10.5.2-485-g9277b838aad)
> > parent(s): 37b6f5cb8ef
> > author: Nikita Malyavin
> > committer: Nikita Malyavin
> > timestamp: 2021-01-29 03:47:52 +1000
> > message:
> >
> > Forbid savepoints setup while ONLINE ALTER goes on
>
> Why is that?
>

Well, in short, it's not implemented. If rollback to savepoint is happened,
we should rollback in our transaction cache as well.

Then we need to remember where the savepoint is, for every online altering
table.
It likely resolves with maintaining a hash Savepoint -> List [ <table,
offset> ]

But now rollback would sole an effect after ALTER TABLE is finished

-- 
Yours truly,
Nikita Malyavin