e2e tests fail with `RuntimeError: Poll timeout` after 2+ hours  of running
Started after [this commit](https://github.com/huggingface/datasets-server/commit/3c6c79b6184295d52518a7499cbfe1616077a753) but doesn't seem to be related to it?

```
2023-09-28T20:39:19.0725016Z =========================== short test summary info ============================
2023-09-28T20:39:19.0725373Z FAILED tests/test_11_api.py::test_auth_e2e[public-none-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0725700Z FAILED tests/test_11_api.py::test_auth_e2e[public-token-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0726149Z FAILED tests/test_11_api.py::test_auth_e2e[public-cookie-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0726464Z FAILED tests/test_11_api.py::test_auth_e2e[gated-token-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0726782Z FAILED tests/test_11_api.py::test_auth_e2e[gated-cookie-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0727091Z FAILED tests/test_11_api.py::test_endpoint[/splits-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0727511Z FAILED tests/test_11_api.py::test_endpoint[/splits-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0727836Z FAILED tests/test_11_api.py::test_endpoint[/first-rows-split] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0728146Z FAILED tests/test_11_api.py::test_endpoint[/parquet-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0728454Z FAILED tests/test_11_api.py::test_endpoint[/parquet-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0728758Z FAILED tests/test_11_api.py::test_endpoint[/info-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729056Z FAILED tests/test_11_api.py::test_endpoint[/info-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729355Z FAILED tests/test_11_api.py::test_endpoint[/size-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729650Z FAILED tests/test_11_api.py::test_endpoint[/size-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729965Z FAILED tests/test_11_api.py::test_endpoint[/is-valid-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0730280Z FAILED tests/test_11_api.py::test_endpoint[/statistics-split] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0730563Z FAILED tests/test_11_api.py::test_rows_endpoint - RuntimeError: Poll timeout
2023-09-28T20:39:19.0730876Z FAILED tests/test_14_statistics.py::test_statistics_endpoint - RuntimeError: Poll timeout
2023-09-28T20:39:19.0739418Z FAILED tests/test_31_admin_metrics.py::test_metrics - AssertionError: queue_jobs_total - queue=dataset-config-names found in {'starlette_requests_in_progress{method="GET",path_template="/healthcheck",pid="12"}': 0.0, 'starlette_requests_in_progress{method="GET",path_template="/metrics",pid="12"}': 1.0, 'starlette_requests_in_progress{method="GET",path_template="/healthcheck",pid="13"}': 0.0, 'starlette_requests_processing_time_seconds_sum{method="GET",path_template="/healthcheck"}': 0.0014055180005243528, 'starlette_requests_processing_time_seconds_bucket{le="0.005",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.01",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.025",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.05",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.075",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.1",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.25",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.5",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.75",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="1.0",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="2.5",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="5.0",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="7.5",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="10.0",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="+Inf",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_count{method="GET",path_template="/healthcheck"}': 2.0, 'queue_jobs_total{pid="12",queue="dataset-config-names",status="waiting"}': 2.0, 'assets_disk_usage{pid="12",type="total"}': 89297309696.0, 'assets_disk_usage{pid="12",type="used"}': 82270883840.0, 'assets_disk_usage{pid="12",type="free"}': 7009648640.0, 'assets_disk_usage{pid="12",type="percent"}': 92.1, 'descriptive_statistics_disk_usage{pid="12",type="total"}': 89297309696.0, 'descriptive_statistics_disk_usage{pid="12",type="used"}': 82270883840.0, 'descriptive_statistics_disk_usage{pid="12",type="free"}': 7009648640.0, 'descriptive_statistics_disk_usage{pid="12",type="percent"}': 92.1, 'duckdb_disk_usage{pid="12",type="total"}': 89297309696.0, 'duckdb_disk_usage{pid="12",type="used"}': 82270883840.0, 'duckdb_disk_usage{pid="12",type="free"}': 7009648640.0, 'duckdb_disk_usage{pid="12",type="percent"}': 92.1, 'hf_datasets_disk_usage{pid="12",type="total"}': 89297309696.0, 'hf_datasets_disk_usage{pid="12",type="used"}': 82270883840.0, 'hf_datasets_disk_usage{pid="12",type="free"}': 7009648640.0, 'hf_datasets_disk_usage{pid="12",type="percent"}': 92.1, 'parquet_metadata_disk_usage{pid="12",type="total"}': 89297309696.0, 'parquet_metadata_disk_usage{pid="12",type="used"}': 82270883840.0, 'parquet_metadata_disk_usage{pid="12",type="free"}': 7009648640.0, 'parquet_metadata_disk_usage{pid="12",type="percent"}': 92.1, 'starlette_requests_total{method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_total{method="GET",path_template="/metrics"}': 1.0, 'starlette_responses_total{method="GET",path_template="/healthcheck",status_code="200"}': 2.0}
2023-09-28T20:39:19.0739643Z assert False
2023-09-28T20:39:19.0740723Z  +  where False = has_metric(name='queue_jobs_total', labels={'pid': '[0-9]*', 'queue': 'dataset-config-names', 'status': 'started'}, metric_names={'assets_disk_usage{pid="12",type="free"}', 'assets_disk_usage{pid="12",type="percent"}', 'assets_disk_usage{pid="12",type="total"}', 'assets_disk_usage{pid="12",type="used"}', 'descriptive_statistics_disk_usage{pid="12",type="free"}', 'descriptive_statistics_disk_usage{pid="12",type="percent"}', ...})
2023-09-28T20:39:19.0741032Z FAILED tests/test_52_search.py::test_search_endpoint - RuntimeError: Poll timeout
2023-09-28T20:39:19.0741198Z ================= 20 failed, 27 passed in 12879.59s (3:34:39) ==================
```
e2e tests fail with `RuntimeError: Poll timeout` after 2+ hours  of running: Started after [this commit](https://github.com/huggingface/datasets-server/commit/3c6c79b6184295d52518a7499cbfe1616077a753) but doesn't seem to be related to it?

```
2023-09-28T20:39:19.0725016Z =========================== short test summary info ============================
2023-09-28T20:39:19.0725373Z FAILED tests/test_11_api.py::test_auth_e2e[public-none-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0725700Z FAILED tests/test_11_api.py::test_auth_e2e[public-token-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0726149Z FAILED tests/test_11_api.py::test_auth_e2e[public-cookie-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0726464Z FAILED tests/test_11_api.py::test_auth_e2e[gated-token-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0726782Z FAILED tests/test_11_api.py::test_auth_e2e[gated-cookie-200-None] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0727091Z FAILED tests/test_11_api.py::test_endpoint[/splits-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0727511Z FAILED tests/test_11_api.py::test_endpoint[/splits-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0727836Z FAILED tests/test_11_api.py::test_endpoint[/first-rows-split] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0728146Z FAILED tests/test_11_api.py::test_endpoint[/parquet-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0728454Z FAILED tests/test_11_api.py::test_endpoint[/parquet-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0728758Z FAILED tests/test_11_api.py::test_endpoint[/info-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729056Z FAILED tests/test_11_api.py::test_endpoint[/info-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729355Z FAILED tests/test_11_api.py::test_endpoint[/size-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729650Z FAILED tests/test_11_api.py::test_endpoint[/size-config] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0729965Z FAILED tests/test_11_api.py::test_endpoint[/is-valid-dataset] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0730280Z FAILED tests/test_11_api.py::test_endpoint[/statistics-split] - RuntimeError: Poll timeout
2023-09-28T20:39:19.0730563Z FAILED tests/test_11_api.py::test_rows_endpoint - RuntimeError: Poll timeout
2023-09-28T20:39:19.0730876Z FAILED tests/test_14_statistics.py::test_statistics_endpoint - RuntimeError: Poll timeout
2023-09-28T20:39:19.0739418Z FAILED tests/test_31_admin_metrics.py::test_metrics - AssertionError: queue_jobs_total - queue=dataset-config-names found in {'starlette_requests_in_progress{method="GET",path_template="/healthcheck",pid="12"}': 0.0, 'starlette_requests_in_progress{method="GET",path_template="/metrics",pid="12"}': 1.0, 'starlette_requests_in_progress{method="GET",path_template="/healthcheck",pid="13"}': 0.0, 'starlette_requests_processing_time_seconds_sum{method="GET",path_template="/healthcheck"}': 0.0014055180005243528, 'starlette_requests_processing_time_seconds_bucket{le="0.005",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.01",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.025",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.05",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.075",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.1",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.25",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.5",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="0.75",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="1.0",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="2.5",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="5.0",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="7.5",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="10.0",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_bucket{le="+Inf",method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_processing_time_seconds_count{method="GET",path_template="/healthcheck"}': 2.0, 'queue_jobs_total{pid="12",queue="dataset-config-names",status="waiting"}': 2.0, 'assets_disk_usage{pid="12",type="total"}': 89297309696.0, 'assets_disk_usage{pid="12",type="used"}': 82270883840.0, 'assets_disk_usage{pid="12",type="free"}': 7009648640.0, 'assets_disk_usage{pid="12",type="percent"}': 92.1, 'descriptive_statistics_disk_usage{pid="12",type="total"}': 89297309696.0, 'descriptive_statistics_disk_usage{pid="12",type="used"}': 82270883840.0, 'descriptive_statistics_disk_usage{pid="12",type="free"}': 7009648640.0, 'descriptive_statistics_disk_usage{pid="12",type="percent"}': 92.1, 'duckdb_disk_usage{pid="12",type="total"}': 89297309696.0, 'duckdb_disk_usage{pid="12",type="used"}': 82270883840.0, 'duckdb_disk_usage{pid="12",type="free"}': 7009648640.0, 'duckdb_disk_usage{pid="12",type="percent"}': 92.1, 'hf_datasets_disk_usage{pid="12",type="total"}': 89297309696.0, 'hf_datasets_disk_usage{pid="12",type="used"}': 82270883840.0, 'hf_datasets_disk_usage{pid="12",type="free"}': 7009648640.0, 'hf_datasets_disk_usage{pid="12",type="percent"}': 92.1, 'parquet_metadata_disk_usage{pid="12",type="total"}': 89297309696.0, 'parquet_metadata_disk_usage{pid="12",type="used"}': 82270883840.0, 'parquet_metadata_disk_usage{pid="12",type="free"}': 7009648640.0, 'parquet_metadata_disk_usage{pid="12",type="percent"}': 92.1, 'starlette_requests_total{method="GET",path_template="/healthcheck"}': 2.0, 'starlette_requests_total{method="GET",path_template="/metrics"}': 1.0, 'starlette_responses_total{method="GET",path_template="/healthcheck",status_code="200"}': 2.0}
2023-09-28T20:39:19.0739643Z assert False
2023-09-28T20:39:19.0740723Z  +  where False = has_metric(name='queue_jobs_total', labels={'pid': '[0-9]*', 'queue': 'dataset-config-names', 'status': 'started'}, metric_names={'assets_disk_usage{pid="12",type="free"}', 'assets_disk_usage{pid="12",type="percent"}', 'assets_disk_usage{pid="12",type="total"}', 'assets_disk_usage{pid="12",type="used"}', 'descriptive_statistics_disk_usage{pid="12",type="free"}', 'descriptive_statistics_disk_usage{pid="12",type="percent"}', ...})
2023-09-28T20:39:19.0741032Z FAILED tests/test_52_search.py::test_search_endpoint - RuntimeError: Poll timeout
2023-09-28T20:39:19.0741198Z ================= 20 failed, 27 passed in 12879.59s (3:34:39) ==================
```