domain: use util.WaitGroupWrapper insteal of sync.WaitGroup

Signed-off-by: Weizhen Wang <[email protected]>
pingcap · Mar 31, 2022 · 4032d9e · 4032d9e
1 parent b7d3cd7
commit 4032d9e
Showing 1 changed file with 1 addition and 2 deletions.
diff --git a/statistics/handle/handle_hist.go b/statistics/handle/handle_hist.go
@@ -136,10 +136,9 @@ type StatsReaderContext struct {
 }
 
 // SubLoadWorker loads hist data for each column
-func (h *Handle) SubLoadWorker(ctx sessionctx.Context, exit chan struct{}, exitWg *sync.WaitGroup) {
+func (h *Handle) SubLoadWorker(ctx sessionctx.Context, exit chan struct{}) {
 	readerCtx := &StatsReaderContext{}
 	defer func() {
-		exitWg.Done()
 		logutil.BgLogger().Info("SubLoadWorker exited.")
 		if readerCtx.reader != nil {
 			err := h.releaseStatsReader(readerCtx.reader, ctx.(sqlexec.RestrictedSQLExecutor))