rewalk directories created

[Thunderstone]

I did a rewalk over the weekend and found that it had created a number of
directories _db, __db, ___db,____db, etc....

Can I remove these directories after the rewalk?

[Thunderstone]

-rewalk creates one underscore'd directory per run. If it's successful
it will not be there upon completion. If it's still there that means
there was a failure. You have apparently had many failures. You should
look at the output of gw to see what the failure was.

If you have no rewalks running you can delete all of the underscore'd
databases.