[skip ci] Add comment for historical (#8607)

Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
2021-09-26 20:19:58 +08:00 · 2021-09-26 20:19:58 +08:00 · 057c7cb591
parent 4b68be2d36
commit 057c7cb591
1 changed files with 1 additions and 0 deletions
--- a/internal/querynode/historical.go
+++ b/internal/querynode/historical.go
@ -36,6 +36,7 @@ const (
 	segmentMetaPrefix = "queryCoord-segmentMeta"
 )

+// historical is in charge of historical data in query node
 type historical struct {
 	ctx context.Context