fix test

Signed-off-by: crazycs520 <[email protected]>

distsql/distsql_test.go

@@ -137,7 +137,7 @@ func TestSelectResultRuntimeStats(t *testing.T) {
 	}
 	stmtStats.RegisterStats(2, s1)
 	stats = stmtStats.GetRootStats(2)
-	expect = "cop_task: {num: 2, max: 1s, min: 1ms, avg: 500.5ms, p95: 1s, max_proc_keys: 200, p95_proc_keys: 200, tot_proc: 1s, tot_wait: 1s, rpc_num: 1, rpc_time: 1s, copr_cache_hit_ratio: 0.00, distsql_concurrency: 15}, backoff{RegionMiss: 1ms}"
+	expect = "cop_task: {num: 2, max: 1s, min: 1ms, avg: 500.5ms, p95: 1s, max_proc_keys: 200, p95_proc_keys: 200, tot_proc: 1s, tot_wait: 1s, copr_cache_hit_ratio: 0.00, distsql_concurrency: 15}, rpc_info:{Cop:{num_rpc:1, total_time:1s}}, backoff{RegionMiss: 1ms}"
 	require.Equal(t, expect, stats.String())
 	// Test for idempotence.
 	require.Equal(t, expect, stats.String())