On Apr 3, 2015, at 9:59 AM, John Scalia <jayknowsunix@gmail.com> wrote:
>
> So the lock should only be during this move, or does it lock the table for the entirety?

The entirety. It doesn't know how to track changes that occur during the copying to the new table and apply them after, so it locks it the whole time. (Just went through this myself...)

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Scott Ribe
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