Adding debug logs for split-duckdb-index
When processing split-duckdb-index in staging env, it is showing this message:
```
DEBUG: 2023-06-28 13:42:51,345 - root - The dataset does not exist on the Hub.
DEBUG: 2023-06-28 13:42:51,349 - root - Directory removed: /duckdb-index/21626898975922-split-duckdb-index-asoria-sample_glue-84f50613
DEBUG: 2023-06-28 13:42:51,349 - root - [split-duckdb-index] the dataset=asoria/sample_glue could not be found, don't update the cache
DEBUG: 2023-06-28 13:42:51,350 - root - [split-duckdb-index] job output with ERROR - JobManager(job_id=649c38d766b00b1fb05b8e4e dataset=asoria/sample_glue job_info={'job_id': '649c38d766b00b1fb05b8e4e', 'type': 'split-duckdb-index', 'params': {'dataset': 'asoria/sample_glue', 'revision': 'cf2d2d9273f1d361831baafab1f29eeb95a6af56', 'config': 'default', 'split': 'test'}, 'priority': <Priority.NORMAL: 'normal'>}

```
Looks like some hub operation does not find the dataset and it is not possible to store the cache result.
Adding a couple of logs for debug.
Adding debug logs for split-duckdb-index: When processing split-duckdb-index in staging env, it is showing this message:
```
DEBUG: 2023-06-28 13:42:51,345 - root - The dataset does not exist on the Hub.
DEBUG: 2023-06-28 13:42:51,349 - root - Directory removed: /duckdb-index/21626898975922-split-duckdb-index-asoria-sample_glue-84f50613
DEBUG: 2023-06-28 13:42:51,349 - root - [split-duckdb-index] the dataset=asoria/sample_glue could not be found, don't update the cache
DEBUG: 2023-06-28 13:42:51,350 - root - [split-duckdb-index] job output with ERROR - JobManager(job_id=649c38d766b00b1fb05b8e4e dataset=asoria/sample_glue job_info={'job_id': '649c38d766b00b1fb05b8e4e', 'type': 'split-duckdb-index', 'params': {'dataset': 'asoria/sample_glue', 'revision': 'cf2d2d9273f1d361831baafab1f29eeb95a6af56', 'config': 'default', 'split': 'test'}, 'priority': <Priority.NORMAL: 'normal'>}

```
Looks like some hub operation does not find the dataset and it is not possible to store the cache result.
Adding a couple of logs for debug.