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[Optimize][Stream load] Speed up stream load 3x #6684

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[Optimize][Stream load] Speed up stream load 3x #6684

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4 changes: 2 additions & 2 deletions be/src/olap/skiplist.h
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Original file line number Diff line number Diff line change
Expand Up @@ -264,9 +264,9 @@ inline void SkipList<Key, Comparator>::Iterator::SeekToLast() {
template <typename Key, class Comparator>
int SkipList<Key, Comparator>::RandomHeight() {
// Increase height with probability 1 in kBranching
static const unsigned int kBranching = 4;
int height = 1;
while (height < kMaxHeight && ((rnd_.Next() % kBranching) == 0)) {
// "& 3" equals to "% 4", and more faster. 4 is kBranching
while (height < kMaxHeight && ((rnd_.Next() & 3) == 0)) {
height++;
}
DCHECK(height > 0);
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