The actual server-side changes are simple. The tests are a different
matter. Many changes were needed to the object server tests to
handle the now-async calls to the container server. In an effort to
test this properly, some drive-by changes were made to improve tests.
I tested this patch by doing zero-byte object writes to one container
as fast as possible. Then I did it again while also saturating 2 of the
container replica's disks. The results are linked below.
https://gist.github.com/notmyname/2bb85acfd8fbc7fc312a
DocImpact
Change-Id: I737bd0af3f124a4ce3e0862a155e97c1f0ac3e52
2289137164