diff --git a/internal/querycoord/task.go b/internal/querycoord/task.go
index 667d1ff396..a0c4ebb4c6 100644
--- a/internal/querycoord/task.go
+++ b/internal/querycoord/task.go
@@ -823,6 +823,7 @@ func (lpt *LoadPartitionTask) rollBack(ctx context.Context) []task {
 	return resultTasks
 }
 
+// ReleasePartitionTask will release all the data of this partition on query nodes
 type ReleasePartitionTask struct {
 	*BaseTask
 	*querypb.ReleasePartitionsRequest