The config values are not yet documented, but they all default to 10 (except for max_file_size) and represent the number of images/tables/videos etc. that are reported as previews to the dataset. Setting them to 0 disables previewing

To clear the configurations, you should use something like Dataset.list_datasets to get all the dataset IDs, then something like:

from clearml import Task


id_ = "229f14fe0cb942708c9c5feb412a7ffe"
task = Task.get_task(id_)
original_status = task.status
print(original_status)
if original_status in ["completed", "failed", "aborted"]:
    task.mark_started(force=True)
task._set_configuration(name="Dataset Content", config_text="")
if original_status == "completed":
    task.mark_completed(force=True)
elif original_status == "failed":
    task.mark_failed(force=True)
elif original_status == "aborted":
    task.mark_stopped(force=True)

to clear the configuration