Almost never.  There was a bug a while back that could have conceivably
caused that under rare circumstances, but I don't know of any current
mechanism for this lossage that you are asking about.

On Mon, Aug 16, 2010 at 6:34 PM, Qian Ye <> wrote:

> My question is, if the master failed, does that means some session
> information will definitely be lost?

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