Optimizations of pre-processing for 'hist' tree method (#4310)

* oprimizations for pre-processing * code cleaning * code cleaning * code cleaning after review * Apply suggestions from code review Co-Authored-By: SmirnovEgorRu <egor.smirnov@intel.com>
2019-04-17 03:36:19 +03:00
parent 207f058711
commit 711397d645
6 changed files with 299 additions and 48 deletions
--- a/src/common/row_set.h
+++ b/src/common/row_set.h
@@ -59,7 +59,6 @@ class RowSetCollection {
  }
  // clear up things
  inline void Clear() {
-    row_indices_.clear();
    elem_of_each_node_.clear();
  }
  // initialize node id 0->everything