Replicator/reconstructor can't rehash partitions on full drives

If a disk is completely full, but is missing a tombstone, the reconstructor will try and push one over using some combination of REPLICATE and DELETE (both of which fail):

Sep 3 00:46:43 localhost object-server: ERROR __call__ error with DELETE /d4/484/AUTH_user1/ssbench_000072_default_policy/large_000088 : #012Traceback (most recent call last):#012 File "/usr/local/lib/python2.7/dist-packages/swift/obj/server.py", line 956, in __call__#012 res = method(req)#012 File "/usr/local/lib/python2.7/dist-packages/swift/common/utils.py", line 2671, in wrapped#012 return func(*a, **kw)#012 File "/usr/local/lib/python2.7/dist-packages/swift/common/utils.py", line 1208, in _timing_stats#012 resp = func(ctrl, *args, **kwargs)#012 File "/usr/local/lib/python2.7/dist-packages/swift/obj/server.py", line 899, in DELETE#012 disk_file.delete(req_timestamp)#012 File "/usr/local/lib/python2.7/dist-packages/swift/obj/diskfile.py", line 1849, in delete#012 with self.create() as deleter:#012 File "/usr/lib/python2.7/contextlib.py", line 17, in __enter__#012 return self.gen.next()#012 File "/usr/local/lib/python2.7/dist-packages/swift/obj/diskfile.py", line 1784, in create#012 raise DiskFileNoSpace()#012DiskFileNoSpace

Sep 3 00:46:43 localhost object-server: ERROR __call__ error with REPLICATE /d4/484/195-2a8-66b-9ee : [Errno 28] No space left on device: '/srv/node/d4/objects-1/484/tmprajHAV.tmp'

This may not be a bug, per se, it just seems like if it's doing two operations here it should be smarter and only do one and not the 2nd if the no space left error is occurring.

Note that nothing exists for AUTH_user1/ssbench_000072_default_policy/large_000088 in /d4/484. I'm not sure why it's actually trying to DELETE it (maybe to create a tombstone?). The actual object itself was deleted hours ago and all that's left are other tombstones in the system.