Since we don't know the order in which connections are served, we may miss the frag with the bad etag, leading to failures like
======================================================================
FAIL: test_reconstruct_fa_with_mixed_etag_with_same_timestamp (test.unit.obj.test_reconstructor.TestReconstructFragmentArchive)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/vagrant/swift/test/unit/obj/test_reconstructor.py", line 3128, in test_reconstruct_fa_with_mixed_etag_with_same_timestamp
self.assertEqual(1, len(error_log_lines))
AssertionError: 1 != 0
-------------------- >> begin captured stdout << ---------------------
object-reconstructor DEBUG: Reconstruct frag #1 with frag indexes [0, 2, 3, 4, 5, 6, 7, 8, 9, 10]
object-reconstructor DEBUG: Reconstruct frag #1 with frag indexes [0, 2, 3, 4, 5, 6, 9, 10, 11, 12]
--------------------- >> end captured stdout << ----------------------
Alternatively, I guess we may get stuck *expecting* the bad etag, causing failures like
======================================================================
ERROR: test_reconstruct_fa_with_mixed_etag_with_same_timestamp (test.unit.obj.test_reconstructor.TestReconstructFragmentArchive)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/vagrant/swift/test/unit/obj/test_reconstructor.py", line 3120, in test_reconstruct_fa_with_mixed_etag_with_same_timestamp
job, node, dict(self.obj_metadata))
File "/vagrant/swift/swift/obj/reconstructor.py", line 383, in reconstruct_fa
raise DiskFileError('Unable to reconstruct EC archive')
DiskFileError: Unable to reconstruct EC archive
-------------------- >> begin captured stdout << ---------------------
object-reconstructor DEBUG: Reconstruct frag #1 with frag indexes [0, 2, 3, 4, 5, 6, 7, 8, 9, 10]
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Mixed Etag (f0510d5479985e9523dc1688b0bc7d63, some garbage) for 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1
object-reconstructor ERROR: Unable to get enough responses (1/10) to reconstruct 10.0.0.1:1001/sdb/0/a/c/o policy#0 frag#1 with ETag some garbage
--------------------- >> end captured stdout << ----------------------
