- class ray.data.datasource.Reader#
A bound read operation for a
This is a stateful class so that reads can be prepared in multiple stages. For example, it is useful for
Datasetsto know the in-memory size of the read prior to executing it.
DEPRECATED: This API is deprecated and may be removed in future Ray releases.
Return an estimate of the in-memory data size, or None if unknown.
Execute the read and return read tasks.