statistics: remove useless copy in the MergePartitionStats2GlobalStats (

#47144)
pingcap · Sep 21, 2023 · 71e5858 · 71e5858
1 parent 3b21c7a
commit 71e5858
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/statistics/handle/globalstats/global_stats.go b/statistics/handle/globalstats/global_stats.go
@@ -206,7 +206,7 @@ func MergePartitionStats2GlobalStats(
  continue
  }
  // Merge CMSketch.
- globalStats.Cms[i] = allCms[i][0].Copy()
+ globalStats.Cms[i] = allCms[i][0]
  for j := 1; j < len(allCms[i]); j++ {
  err = globalStats.Cms[i].MergeCMSketch(allCms[i][j])
  if err != nil {
@@ -239,7 +239,7 @@ func MergePartitionStats2GlobalStats(
  }
 
  // Merge FMSketch.
- globalStats.Fms[i] = allFms[i][0].Copy()
+ globalStats.Fms[i] = allFms[i][0]
  for j := 1; j < len(allFms[i]); j++ {
  globalStats.Fms[i].MergeFMSketch(allFms[i][j])
  allFms[i][j].DestroyAndPutToPool()