Hi guys,
for all interested I will share my experience with EMC ECS S3.
The issue described in my initial post, turn out to be a bug in our load balancer which is not part of std. ECS. Once fixed the addressing worked as expected.
However, there is bug in Dell/EMC ECS as well as in IBM CMOD; this is represented
silently not removing / unloading documents from storage while index is removed. The only indication is arssockd trace or by using aws cli to observe that documents are not removed while indices are gone.
The ECS bug is related to date format with POST/delete command is send the ISO date is not recognized/rejected. The Dell/EMC promptly provided a fix, to cover this issue.
The IBM CMOD bug is related to format of of the request, where all requests are AWS4 compliant, but unloaded uses mixed AWS4 (get) and AWS2 (delete). The AWS2 request format is soon to be deprecated by Amazon and is already not supported by all AWS regions. (e.g. eu-central-1)
Note: Soon AWS is going to support legal retention period lock down, which will be reflected in ECS S3 as well. I wonder if IBM is going to implement relevant changes
Hope this helps,
N.