Jiaming Yuan c8c7b9649c

Fix and optimize logger (#4002) ...

* Fix logging switch statement.

* Remove debug_verbose_ in AllReducer.

* Don't construct the stream when not needed.

* Make default constructor deleted.

* Remove redundant IsVerbose.

2018-12-17 19:23:05 +08:00

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xgboost

Fix and optimize logger (#4002)

2018-12-17 19:23:05 +08:00