[Tilesathome] INNODB for tiles_meta?

[OJW]

What do people think of the idea of moving tiles_meta to InnoDB format (is 
currently MyISAM)

It currently has 24 million entries, in 3.2 GiB of disk, which (not being a db 
expert) I guess will take a while to convert.

tiles_meta is written-to for each upload (sometimes many times per upload), 
and read (a) whenever someone asks for details of who uploaded a tile and (b) 
when daily tile list is generated.