Scalability issue: changing label on address takes a long time when there are over 3000 addresses

[urocoin]

I think there has been an oversight in the algorithms run when a label is being changed. It seems that MultiBit is scanning all the addresses each time.

Changing the label on a single address (with the sort marker on the address column) should be a O(1) operation. But in this case it seems to be an O(n) operation.

[gary-rowe]

Well spotted and thanks for the feedback.

Given that MultiBit Classic is being deprecated in favour of MultiBit HD it is doubtful that a fix for this would be put in. Most users would have far fewer than 3000 addresses and would hardly ever see this so it doesn't rate as critical.

If you'd like to try MultiBit HD you can join the Private Beta Group.