multiple storage engines supporting XA

[Zardosht Kasheff]

Hello all,

I am trying to add XA for our storage engine in 5.1.61, and am running
into http://bugs.mysql.com/bug.php?id=47134.

Does anyone have experience with adding a storage engine (in addition
to InnoDB) that supports XA to MySQL? Does 5.5 have this problem?
MariaDB?

Does MySQL work when multiple engines support XA? Commenters in the
bug report expressed doubts.

Thanks
-Zardosht