Hello all, I saw the following on planet mysql today, http://www.facebook.com/note.php?note_id=430801045932, and it got me thinking. I remember at the 2010 storage engine summit, we discussed having more types of alter table be done online. Here are the meeting notes on that topic: Smarter "ALTER TABLE" Comment: Need to fix ALTER TABLE to fully support online operations. Jonas: This is already implemented, but currently only in the -telco cluster trees. Antony is willing to look into backporting new ALTER TABLE to MariaDB Does anyone know if any investigation has been done? I am curious to learn about people's findings. I have done a little poking at the mysql cluster code that has this feature, but I do not understand it well enough to know integration risk and complexity. Does anyone have any thoughts? I am curious to learn more. Thanks -Zardosht