/
test_replica_read.rs
141 lines (125 loc) · 4.71 KB
/
test_replica_read.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.
use std::sync::Arc;
use fail;
use std::mem;
use std::sync::atomic::AtomicBool;
use std::sync::Mutex;
use std::thread;
use std::time::Duration;
use test_raftstore::*;
use tikv_util::HandyRwLock;
#[test]
fn test_wait_for_apply_index() {
let _guard = crate::setup();
let mut cluster = new_server_cluster(0, 3);
// Increase the election tick to make this test case running reliably.
configure_for_lease_read(&mut cluster, Some(50), Some(10_000));
let pd_client = Arc::clone(&cluster.pd_client);
pd_client.disable_default_operator();
let r1 = cluster.run_conf_change();
cluster.must_put(b"k0", b"v0");
let p2 = new_peer(2, 2);
cluster.pd_client.must_add_peer(r1, p2.clone());
let p3 = new_peer(3, 3);
cluster.pd_client.must_add_peer(r1, p3.clone());
must_get_equal(&cluster.get_engine(3), b"k0", b"v0");
let region = cluster.get_region(b"k0");
cluster.must_transfer_leader(region.get_id(), p2.clone());
// Block all write cmd applying of Peer 3.
fail::cfg("on_apply_write_cmd", "sleep(2000)").unwrap();
cluster.must_put(b"k1", b"v1");
must_get_equal(&cluster.get_engine(2), b"k1", b"v1");
// Peer 3 does not apply the cmd of putting 'k1' right now, then the follower read must
// be blocked.
must_get_none(&cluster.get_engine(3), b"k1");
let mut request = new_request(
region.get_id(),
region.get_region_epoch().clone(),
vec![new_get_cf_cmd("default", b"k1")],
false,
);
request.mut_header().set_peer(p3.clone());
request.mut_header().set_replica_read(true);
let (cb, rx) = make_cb(&request);
cluster
.sim
.rl()
.async_command_on_node(3, request, cb)
.unwrap();
// Must timeout here
assert!(rx.recv_timeout(Duration::from_millis(500)).is_err());
fail::cfg("on_apply_write_cmd", "off").unwrap();
// After write cmd applied, the follower read will be executed.
match rx.recv_timeout(Duration::from_secs(3)) {
Ok(resp) => {
assert_eq!(resp.get_responses().len(), 1);
assert_eq!(resp.get_responses()[0].get_get().get_value(), b"v1");
}
Err(_) => panic!("follower read failed"),
}
}
#[test]
fn test_duplicate_read_index_ctx() {
let _guard = crate::setup();
// Initialize cluster
let mut cluster = new_node_cluster(0, 3);
configure_for_lease_read(&mut cluster, Some(50), Some(10_000));
cluster.cfg.raft_store.raft_heartbeat_ticks = 1;
let pd_client = Arc::clone(&cluster.pd_client);
pd_client.disable_default_operator();
// Set region and peers
let r1 = cluster.run_conf_change();
let p1 = new_peer(1, 1);
cluster.must_put(b"k0", b"v0");
let p2 = new_peer(2, 2);
cluster.pd_client.must_add_peer(r1, p2.clone());
let p3 = new_peer(3, 3);
cluster.pd_client.must_add_peer(r1, p3.clone());
must_get_equal(&cluster.get_engine(3), b"k0", b"v0");
let region = cluster.get_region(b"k0");
assert_eq!(cluster.leader_of_region(region.get_id()).unwrap(), p1);
// Delay all raft messages to peer 1.
let dropped_msgs = Arc::new(Mutex::new(Vec::new()));
let filter = Box::new(
RegionPacketFilter::new(region.get_id(), 1)
.direction(Direction::Recv)
.when(Arc::new(AtomicBool::new(true)))
.reserve_dropped(Arc::clone(&dropped_msgs)),
);
cluster.sim.wl().add_recv_filter(1, filter);
// send two read index requests to leader
let mut request = new_request(
region.get_id(),
region.get_region_epoch().clone(),
vec![new_read_index_cmd()],
true,
);
request.mut_header().set_peer(p2.clone());
let (cb2, rx2) = make_cb(&request);
// send to peer 2
cluster
.sim
.rl()
.async_command_on_node(2, request.clone(), cb2)
.unwrap();
thread::sleep(Duration::from_millis(200));
request.mut_header().set_peer(p3.clone());
let (cb3, rx3) = make_cb(&request);
// send to peer 3
cluster
.sim
.rl()
.async_command_on_node(3, request.clone(), cb3)
.unwrap();
thread::sleep(Duration::from_millis(200));
let router = cluster.sim.wl().get_router(1).unwrap();
fail::cfg("pause_on_peer_collect_message", "pause").unwrap();
cluster.sim.wl().clear_recv_filters(1);
for raft_msg in mem::replace(dropped_msgs.lock().unwrap().as_mut(), vec![]) {
router.send_raft_message(raft_msg).unwrap();
}
fail::cfg("pause_on_peer_collect_message", "off").unwrap();
// read index response must not be dropped
assert!(rx2.recv_timeout(Duration::from_millis(500)).is_ok());
assert!(rx3.recv_timeout(Duration::from_millis(500)).is_ok());
}