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
142
143
144
|
/**
* Test that standalones are able to startup with 'recordPreImages' set in collection metadata; and
* that 'recordPreImages' is inactive in standalone mode.
*
* @tags: [
* # Servers are restarted in this test and the data must be retained.
* requires_persistence,
* # This test uses a replica set and must avoid replica set incompatible test suites, like the
* # test suite that turns journaling off.
* requires_replication,
* ]
*/
(function() {
'use strict';
/**
* Fetch the collection information on database 'nodeDB' for collection 'collName'. Expects the
* collection to exist.
*/
const findCollectionInfo = function(nodeDB, collName) {
let collInfos = nodeDB.getCollectionInfos();
assert.gt(collInfos.length, 0, "The database is empty");
let collInfo = collInfos.filter(function(z) {
return z.name == collName;
});
assert.eq(collInfo.length, 1);
return collInfo[0];
};
/**
* Prints out all of the oplog collection entries on 'node'.
*/
function printOplog(node) {
let cursor = node.getDB('local').oplog.rs.find();
while (cursor.hasNext()) {
jsTest.log("Oplog entry: " + tojson(cursor.next()));
}
}
/**
* A --replSet server should be able to set 'recordPreImages' on a collection and then be restarted
* in standalone mode successfully.
*/
jsTest.log("Starting up a 1-node replica set");
var rst = new ReplSetTest({nodes: 1});
rst.startSet();
rst.initiate();
const dbName = 'record_preimage_standalone_mode_test_db';
const collName = 'testColl';
let primary = rst.getPrimary();
let testDB = primary.getDB(dbName);
let testColl = testDB.getCollection(collName);
jsTest.log("Creating a collection with 'recordPreImages' set to true and adding some data");
assert.commandWorked(testDB.runCommand({create: collName, recordPreImages: true}));
assert.eq(findCollectionInfo(testDB, collName).options.recordPreImages, true);
assert.commandWorked(testColl.insert({a: 1, b: 1}));
assert.commandWorked(testColl.update({a: 1}, {a: 2, b: 2}));
// Ensure all of the writes make it to disk before checkpointing below.
assert.commandWorked(testColl.update({a: 2}, {a: 3, b: 3}, {writeConcern: {w: 1, j: true}}));
jsTest.log("Forcing a checkpoint to be taken");
// Ensure that the standalone can recover all of the writes from the last checkpoint because
// standalone mode does not run recovery from the oplog. The last write with j:true write concern
// ensured that the data reached disk, and now fsync will checkpoint that data.
assert.commandWorked(primary.adminCommand({fsync: 1}));
jsTest.log("Restarting the replica set member as a standalone node");
printOplog(primary); // Debugging aid.
let replicaSetNodeId = rst.getNodeId(primary);
let replicaSetNodeDbpath = primary.dbpath;
jsTest.log("replicaSetNodeId: " + replicaSetNodeId +
", replicaSetNodeDbpath: " + replicaSetNodeDbpath);
rst.stop(replicaSetNodeId);
let standaloneConn = MongoRunner.runMongod({
dbpath: replicaSetNodeDbpath,
noCleanData: true,
});
let standaloneDB = standaloneConn.getDB(dbName);
let standaloneColl = standaloneDB.getCollection(collName);
let standaloneOplogColl = standaloneConn.getDB('local').oplog.rs;
assert.eq(findCollectionInfo(standaloneDB, collName).options.recordPreImages, true);
/**
* A standalone mode server should be able to do writes without triggering the 'recordPreImages'
* feature because oplog entries are not written in standalone mode: the 'recordPreImages' setting
* causes additional oplog entries to be written.
*/
const numOplogEntriesBefore = standaloneOplogColl.find().itcount();
jsTest.log(
"Updating some data in the collection with 'recordPreImages' set to check that nothing " +
"happens in standalone mode");
assert.commandWorked(standaloneColl.insert({c: 1, d: 1}));
assert.commandWorked(standaloneColl.update({c: 1}, {c: 2, d: 2}));
assert.commandWorked(standaloneColl.update({c: 2}, {c: 3, d: 3}));
jsTest.log(
"Checking that no oplog entries were produced for 'recordPreImages': the feature is inactive");
printOplog(standaloneConn); // Debugging aid.
const numOplogEntriesAfter = standaloneOplogColl.find().itcount();
assert.eq(numOplogEntriesBefore, numOplogEntriesAfter);
jsTest.log("Shutting down standalone");
MongoRunner.stopMongod(standaloneConn);
jsTest.log("Restarting the node as a replica set member again and doing some writes");
rst.start(replicaSetNodeId, {}, true /*restart*/);
primary = rst.getPrimary();
testDB = primary.getDB(dbName);
testColl = testDB.getCollection(collName);
// Check that everything is still working properly after being in standalone mode.
assert.eq(findCollectionInfo(testDB, collName).options.recordPreImages, true);
assert.commandWorked(testColl.update({a: 3}, {a: 4, b: 4}));
assert.commandWorked(testColl.update({a: 4}, {a: 5, b: 5}));
jsTest.log("Shutting down replica set");
rst.stopSet();
}());
|
