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
|
/**
* @tags: [requires_journaling]
*
* Test basic read committed maxTimeMS timeout while waiting for a committed snapshot:
* - Reads with an 'afterOpTime' snapshot >= current time should be able to see things that
* happened before or at that opTime.
* - Reads should time out if there are no snapshots available on secondary.
*/
load("jstests/replsets/rslib.js"); // For reconfig and startSetIfSupportsReadMajority.
(function() {
"use strict";
// Set up a set and grab things for later.
var name = "read_committed_no_snapshots";
var replTest = new ReplSetTest({name: name,
nodes: 3,
nodeOptions: {enableMajorityReadConcern: ''}});
if (!startSetIfSupportsReadMajority(replTest)) {
jsTest.log("skipping test since storage engine doesn't support committed reads");
return;
}
var nodes = replTest.nodeList();
replTest.initiate({"_id": name,
"members": [
{ "_id": 0, "host": nodes[0] },
{ "_id": 1, "host": nodes[1], priority: 0 },
{ "_id": 2, "host": nodes[2], arbiterOnly: true }],
"protocolVersion": 1
});
// Get connections and collection.
var primary = replTest.getPrimary();
var secondary = replTest.liveNodes.slaves[0];
var secondaryId = replTest.getNodeId(secondary);
var db = primary.getDB(name);
// Do a write, wait for it to replicate, and ensure it is visible.
var res = db.runCommandWithMetadata(
"insert",
{
insert: "foo",
documents: [{_id: 1, state: 0}],
writeConcern: {w: "majority", wtimeout: 60*1000}
},
{"$replData": 1});
assert.commandWorked(res.commandReply);
// We need to propagate the lastOpVisible from the primary as afterOpTime in the secondary to ensure
// we wait for the write to be in the majority committed view.
var lastOp = res.metadata["$replData"].lastOpVisible;
secondary.setSlaveOk();
// Timeout is based on heartbeat timeout.
assert.commandWorked(secondary.getDB(name).foo.runCommand(
'find', {"readConcern": {"level": "majority", "afterOpTime": lastOp},
"maxTimeMS": 10 * 1000}));
// Disable snapshotting via failpoint
secondary.adminCommand({configureFailPoint: 'disableSnapshotting', mode: 'alwaysOn'});
// Resync to drop any existing snapshots
secondary.adminCommand({resync: 1});
// Ensure maxTimeMS times out while waiting for this snapshot
assert.commandFailed(secondary.getDB(name).foo.runCommand(
'find', {"readConcern": {"level": "majority"}, "maxTimeMS": 1000}));
// Reconfig to make the secondary the primary
var config = primary.getDB("local").system.replset.findOne();
config.members[0].priority = 0;
config.members[1].priority = 3;
config.version++;
primary = reconfig(replTest, config, true);
// Ensure maxTimeMS times out while waiting for this snapshot
assert.commandFailed(primary.getSiblingDB(name).foo.runCommand(
'find', {"readConcern": {"level": "majority"}, "maxTimeMS": 1000}));
}());
|
