WARNING: /workspace/srcdir/xgboost/src/learner.cc:1350: Empty dataset at worker: 0

[ericphanson]

I'm seeing this warning printed over and over while evaluating an XGBoost model through MLJ (calling MLJBase.predict(...) on an XGBoostClassifier). Any hint what that could be?

[ExpandingMan]

This looks like the warning you get when you run a prediction on empty data, which I also find extremely annoying. This warning is called from the C lib.

I'm not above checking for empty data on the Julia side and eliding the call, though it's worth contemplating whether doing so would have unforeseen consequences.