tree dd29a06f35ffb0eb5f3acec067f7b82dc8244885
parent 4f0f4bb61441e211f879c62dd8a763ed6888e442
author Brad Fitzpatrick <bradfitz@golang.org> 1556561931 +0000
committer Brad Fitzpatrick <bradfitz@golang.org> 1556562999 +0000

cmd/coordinator: only bound old revdial builds

Revert CL 173517 and replace with a similar but different mechanism.

Now that the new revdial is out, only penalize the old revdial users
(a few stragglers who haven't updated). In practice the limit of 10 at
once won't be a problem but will protect the coordinator during submit
floods.

Fixes golang/go#31639

Change-Id: I6b6c3567205fdd98e0b80def96d75827e986fe4f
Reviewed-on: https://go-review.googlesource.com/c/build/+/174325
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>