ceph/ceph — pull request #1539 by athanatos (2014-03-26 20:26:44+00:00)
Title: PG: don't query unfound on empty pgs

When the replica responds, it responds with a notify
rather than a log, which the primary then ignores since
it is already in the peer_info map. Rather than fix that
we'll simply not send queries to peers we already know to
have no unfound objects.

Fixes: #6910
Signed-off-by: Samuel Just
Reviewed-by: Sage Weil
Reviewed-by: David Zafman
(cherry picked from commit 838b6c8387087543ce50837277f7f6b52ae87d00)