after objects are deleted, they may still be visible from containers

[ywang19]

this is one swift specific issue, which is caused by swift consistency mechanism.

[tsg-]

Could you add more detail on this issue? How to reproduce etc?

[ywang19]

After cosbench deleted all objects in one container, when it tried to delete the container, some complains say there are still some objects under the container. indeed, this is caused by current consistency model swift adopts, swift is not a strong consistency system, it has some loose consistency window.

For the expected fix, it's required to fix the consistency model :-). but some retry mechanism to gradually delete all objects in the container. e.g., at the first try, 10 out of 1000 objects remains, next try remains 1, the last try cleans up all objects.

[ywang19]

fixed through commit: 6d259d2