Cancelling Lookup.run

[Glenn M. <gl...@ze...>]

Is it possible to asynchronously cancel a lookup?

Currently I'm running lookups from a worker thread; to cancel, I
discard the thread, assuming it'll time out on its own eventually.
I'd much prefer to abort the lookup properly, so the thread can be
joined before continuing, rather than continuing to retry and time
out.  (It would also eliminate the need for yet another worker
thread.)

-- 
Glenn Maynard