revert back to racey with sleeps

Author: max-hoffman

server/handler_test.go

@@ -800,8 +800,7 @@ func TestHandlerKillQuery(t *testing.T) {
 		})
 	}()
 
-	wg.Wait()
-	wg.Add(1)
+	time.Sleep(100 * time.Millisecond)
 	var sleepQueryID string
 	err = handler.ComQuery(context.Background(), conn2, "SHOW PROCESSLIST", func(res *sqltypes.Result, more bool) error {
 		// 1,  ,  , test, Query, 0, ...    , SELECT SLEEP(1000)
@@ -826,13 +825,15 @@ func TestHandlerKillQuery(t *testing.T) {
 	})
 	require.NoError(err)
 
+	time.Sleep(100 * time.Millisecond)
 	err = handler.ComQuery(context.Background(), conn2, "KILL QUERY "+sleepQueryID, func(res *sqltypes.Result, more bool) error {
 		return nil
 	})
 	require.NoError(err)
 	wg.Wait()
 	require.Error(sleepErr)
 
+	time.Sleep(100 * time.Millisecond)
 	err = handler.ComQuery(context.Background(), conn2, "SHOW PROCESSLIST", func(res *sqltypes.Result, more bool) error {
 		// 1,  ,  , test, Sleep, 0,        ,
 		// 2,  ,  , test, Query, 0, running, SHOW PROCESSLIST