At 02:05 PM 11/16/2007, you wrote:
>How do you import the data?
>Load data from file is faster thought
>so better to export myisam -> file and then you do load data from file
>make sure you set autocommit=0 to make it faster
Sure but won't the entire Load Data will still be wrapped in a single
transaction? How long would it take to rollback that transaction if it had
over 130 million rows?
>On Nov 17, 2007 12:29 AM, B. Keith Murphy <bmurphy@stripped> wrote:
> > I have something to throw out. I just got done importing 140 million
> > rows from a myisam table to a innodb table. While it worked I had a
> > thought about 3/4ths of the way through. What if the transaction had
> > been canceled about 130 million rows in? It would have taken weeks to
> > roll back.
> > The only way I know of to stop a rollback like that is to bring out the
> > sledgehammer and kill the mysql processes and then rip out the entire
> > database and re-import. Faster than the rollback granted - but not very
> > elegant. Not something you want to do on a production server either
> > (the only time I had this happen it was in a test environment so there
> > were no consequences to my subsequent actions :)
> > Any better way to do this?
> > Thanks,
> > Keith
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