Re: purpose of thd_mark_transaction_to_rollback

Stewart Smith <[email protected]> Fri, 22 Jun 2012 11:17:06 +1000

Newsgroups	gmane.comp.db.mysql.devel
Message-ID	<[email protected]>

On Thu, 21 Jun 2012 10:45:58 -0400, Zardosht Kasheff <[email protected]> wrote:
> What I want to know is if our engine hits a deadlock, and we have NOT
> aborted the transaction internally, are we required to call
> thd_mark_transaction_to_rollback so that "xa end" properly then
> returns the right error. If so, this seems weird, as MySQL got the
> error code earlier, and MySQL should just ensure that "xa end" returns
> the right error without requiring the engine to make an additional
> call.

This is (rather unfortunately) a common thing inside MySQL in the engine
interface (e.g. ha_rnd_init())

-- 
Stewart Smith

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