Deletion errors on benchmark rerun

[roman-khimov]

#102 (comment), rerunning the same benchmark:

Parameters: url=http://localhost:8080, bucket=loadgen, region=us-east-1, duration=10, threads=4, loops=1, size=64K
got existing 8 objects, try to delete now...
after delete, got 3 objects

Gateway:

2021-06-30T23:23:20.551+0300    info    handler/put.go:127      bucket is created       {"container_id": "8vxUBvmSUGDmVMVsM5r8FUoSyX6WnRfkZHTpLw4Bwt7N"}
2021-06-30T23:23:20.552+0300    info    api/router.go:153       call method     {"status": 200, "request_id": "d42b049d-4de1-4805-972f-6aec151b6cb8", "method": "CreateBucket", "description": "OK"}
2021-06-30T23:23:20.585+0300    warn    layer/layer.go:228      could not fetch object meta     {"error": "sending the request failed: rpc error: code = Unknown desc = could not handle request: could not handle request: object already removed"}
2021-06-30T23:23:20.592+0300    warn    layer/layer.go:228      could not fetch object meta     {"error": "sending the request failed: rpc error: code = Unknown desc = could not handle request: could not handle request: object already removed"}
2021-06-30T23:23:20.600+0300    warn    layer/layer.go:228      could not fetch object meta     {"error": "sending the request failed: rpc error: code = Unknown desc = could not handle request: could not handle request: object already removed"}
2021-06-30T23:23:20.601+0300    warn    layer/layer.go:228      could not fetch object meta     {"error": "sending the request failed: rpc error: code = Unknown desc = could not handle request: could not handle request: object already removed"}
2021-06-30T23:23:20.607+0300    warn    layer/layer.go:228      could not fetch object meta     {"error": "sending the request failed: rpc error: code = Unknown desc = could not handle request: could not handle request: object already removed"}
2021-06-30T23:23:20.607+0300    info    api/router.go:153       call method     {"status": 200, "request_id": "78717c08-cb14-44e1-aa66-147262fc582f", "method": "ListObjectsV1", "description": "OK"}
2021-06-30T23:23:20.719+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "6812eebb-2517-484d-bd5f-0587b6e1c628", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:20.942+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "0c697e28-7cb9-4af8-9d92-0482c6aa6595", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:21.065+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "25c1bfbb-66e9-4cb7-9593-fc0db0a9bba3", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:21.255+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "3ae289bd-e36f-4ace-b7c3-89d1e204c136", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:21.456+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "a5cfc7e4-e1c0-47b9-a0ad-969f46a6f162", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:21.593+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "0410d02f-92c2-4b8f-b887-6e7438053006", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:21.795+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "3a572e91-ae9a-459f-ac0b-5348454a9f5b", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:21.984+0300    info    api/router.go:153       call method     {"status": 204, "request_id": "fd8e790a-d66e-47a8-8169-5abf0a431750", "method": "DeleteObject", "description": "No Content"}
2021-06-30T23:23:22.108+0300    warn    layer/layer.go:228      could not fetch object meta     {"error": "sending the request failed: rpc error: code = Unknown desc = could not handle request: could not handle request: object already removed"}
2021-06-30T23:23:22.116+0300    warn    layer/layer.go:228      could not fetch object meta     {"error": "sending the request failed: rpc error: code = Unknown desc = could not handle request: could not handle request: object already removed"}
2021-06-30T23:23:22.117+0300    info    api/router.go:153       call method     {"status": 200, "request_id": "27ed90af-ca20-4657-af03-d755f76d4a29", "method": "ListObjectsV1", "description": "OK"}

Notice that a new bucket is created, but the old one seems to be chosen for the test (not surprisingly). This old bucket has some objects that benchmark is trying to delete, but it's not really successful at that.