[feature request] accelerate the data loading from Python/R object

[guolinke]

refer to the code in src/c_api.cpp (LGBM_BoosterPredictFor* and LGBM_DatasetCreateFrom*).
Currently, the data are read by the function wrapper, which may produce some overheads.

[jameslamb]

@guolinke could you elaborate on this? I don't understand which part of src/c_api.cpp you are referring to.

[guolinke]

@jameslamb
refer to LGBM_BoosterPredictFor* and LGBM_DatasetCreateFrom*

[jameslamb]

@jameslamb
refer to LGBM_BoosterPredictFor* and LGBM_DatasetCreateFrom*

got it, thanks!

[StrikerRUS]

Closed in favor of being in #2302. We decided to keep all feature requests in one place.

Welcome to contribute this feature! Please re-open this issue (or post a comment if you are not a topic starter) if you are actively working on implementing this feature.