statistics: fix the wrong comments (#48183)

pingcap · Nov 1, 2023 · 046b52a · 046b52a
1 parent 733b10b
commit 046b52a
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/pkg/statistics/handle/storage/stats_read_writer.go b/pkg/statistics/handle/storage/stats_read_writer.go
@@ -161,7 +161,8 @@ func (s *statsReadWriter) ChangeGlobalStatsID(from, to int64) (err error) {
 	}, util.FlagWrapTxn)
 }
 
-// ResetTableStats2KVForDrop resets the count to 0.
+// ResetTableStats2KVForDrop update the version of mysql.stats_meta.
+// Then GC worker will delete the old version of stats.
 func (s *statsReadWriter) ResetTableStats2KVForDrop(physicalID int64) (err error) {
 	statsVer := uint64(0)
 	defer func() {

diff --git a/pkg/statistics/handle/util/interfaces.go b/pkg/statistics/handle/util/interfaces.go
@@ -252,7 +252,8 @@ type StatsReadWriter interface {
 	// then tidb-server will reload automatic.
 	UpdateStatsVersion() error
 
-	// ResetTableStats2KVForDrop resets the count to 0.
+	// ResetTableStats2KVForDrop update the version of mysql.stats_meta.
+	// Then GC worker will delete the old version of stats.
 	ResetTableStats2KVForDrop(physicalID int64) (err error)
 
 	// ChangeGlobalStatsID changes the global stats ID.