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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/**
* Tests the TenantMigrationAccessBlocker and donor state document are updated correctly at each
* stage of the migration, and are eventually removed after the donorForgetMigration has returned.
*
* Tenant migrations are not expected to be run on servers with ephemeralForTest, and in particular
* this test fails on ephemeralForTest because the donor has to wait for the write to set the
* migration state to "committed" and "aborted" to be majority committed but it cannot do that on
* ephemeralForTest.
*
* @tags: [requires_fcv_47, requires_majority_read_concern, incompatible_with_eft]
*/
(function() {
"use strict";
load("jstests/libs/fail_point_util.js");
load("jstests/libs/parallelTester.js");
load("jstests/libs/uuid_util.js");
load("jstests/replsets/libs/tenant_migration_util.js");
let expectedNumRecipientSyncDataCmdSent = 0;
let expectedNumRecipientForgetMigrationCmdSent = 0;
/**
* Runs the donorForgetMigration command and asserts that the TenantMigrationAccessBlocker and donor
* state document are eventually removed from the donor.
*/
function testDonorForgetMigrationAfterMigrationCompletes(
donorRst, recipientRst, migrationId, dbPrefix) {
jsTest.log("Test donorForgetMigration after the migration completes");
const donorPrimary = donorRst.getPrimary();
const recipientPrimary = recipientRst.getPrimary();
assert.commandWorked(
donorPrimary.adminCommand({donorForgetMigration: 1, migrationId: migrationId}));
expectedNumRecipientForgetMigrationCmdSent++;
const recipientForgetMigrationMetrics =
recipientPrimary.adminCommand({serverStatus: 1}).metrics.commands.recipientForgetMigration;
assert.eq(recipientForgetMigrationMetrics.failed, 0);
assert.eq(recipientForgetMigrationMetrics.total, expectedNumRecipientForgetMigrationCmdSent);
donorRst.nodes.forEach((node) => {
assert.soon(() =>
null == node.adminCommand({serverStatus: 1}).tenantMigrationAccessBlocker);
});
assert.soon(() => 0 ===
donorPrimary.getCollection(kConfigDonorsNS).count({databasePrefix: dbPrefix}));
assert.soon(() => 0 ===
donorPrimary.adminCommand({serverStatus: 1})
.repl.primaryOnlyServices.TenantMigrationDonorService);
const donorRecipientMonitorPoolStats =
donorPrimary.adminCommand({connPoolStats: 1}).replicaSets;
assert.eq(Object.keys(donorRecipientMonitorPoolStats).length, 0);
}
const donorRst = new ReplSetTest({
nodes: [{}, {rsConfig: {priority: 0}}, {rsConfig: {priority: 0}}],
name: "donor",
nodeOptions: {
setParameter: {
enableTenantMigrations: true,
// Set the delay before a donor state doc is garbage collected to be short to speed up
// the test.
tenantMigrationGarbageCollectionDelayMS: 3 * 1000,
// Set the TTL monitor to run at a smaller interval to speed up the test.
ttlMonitorSleepSecs: 1,
}
}
});
const recipientRst = new ReplSetTest(
{nodes: 1, name: "recipient", nodeOptions: {setParameter: {enableTenantMigrations: true}}});
donorRst.startSet();
donorRst.initiate();
recipientRst.startSet();
recipientRst.initiate();
const donorPrimary = donorRst.getPrimary();
const recipientPrimary = recipientRst.getPrimary();
const kRecipientConnString = recipientRst.getURL();
const kDBPrefix = "testDb";
const kConfigDonorsNS = "config.tenantMigrationDonors";
let configDonorsColl = donorPrimary.getCollection(kConfigDonorsNS);
configDonorsColl.createIndex({expireAt: 1}, {expireAfterSeconds: 0});
(() => {
jsTest.log("Test the case where the migration commits");
const migrationId = UUID();
const migrationOpts = {
migrationIdString: extractUUIDFromObject(migrationId),
recipientConnString: recipientRst.getURL(),
dbPrefix: kDBPrefix,
readPreference: {mode: "primary"},
};
let migrationThread =
new Thread(TenantMigrationUtil.startMigration, donorPrimary.host, migrationOpts);
let blockingFp = configureFailPoint(donorPrimary, "pauseTenantMigrationAfterBlockingStarts");
migrationThread.start();
// Wait for the migration to enter the blocking state.
blockingFp.wait();
let mtab = donorPrimary.adminCommand({serverStatus: 1}).tenantMigrationAccessBlocker;
assert.eq(mtab[kDBPrefix].access, TenantMigrationUtil.accessState.kBlockingReadsAndWrites);
assert(mtab[kDBPrefix].blockTimestamp);
let donorDoc = configDonorsColl.findOne({databasePrefix: kDBPrefix});
let blockOplogEntry = donorPrimary.getDB("local").oplog.rs.findOne(
{ns: kConfigDonorsNS, op: "u", "o.databasePrefix": kDBPrefix});
assert.eq(donorDoc.state, "blocking");
assert.eq(donorDoc.blockTimestamp, blockOplogEntry.ts);
// Verify that donorForgetMigration fails since the decision has not been made.
assert.commandFailedWithCode(
donorPrimary.adminCommand({donorForgetMigration: 1, migrationId: migrationId}),
ErrorCodes.TenantMigrationInProgress);
// Allow the migration to complete.
blockingFp.off();
migrationThread.join();
const res = assert.commandWorked(migrationThread.returnData());
assert.eq(res.state, "committed");
donorDoc = configDonorsColl.findOne({databasePrefix: kDBPrefix});
let commitOplogEntry =
donorPrimary.getDB("local").oplog.rs.findOne({ns: kConfigDonorsNS, op: "u", o: donorDoc});
assert.eq(donorDoc.state, "committed");
assert.eq(donorDoc.commitOrAbortOpTime.ts, commitOplogEntry.ts);
assert.soon(() => {
mtab = donorPrimary.adminCommand({serverStatus: 1}).tenantMigrationAccessBlocker;
return mtab[kDBPrefix].access === TenantMigrationUtil.accessState.kReject;
});
assert(mtab[kDBPrefix].commitOrAbortOpTime);
expectedNumRecipientSyncDataCmdSent += 2;
const recipientSyncDataMetrics =
recipientPrimary.adminCommand({serverStatus: 1}).metrics.commands.recipientSyncData;
assert.eq(recipientSyncDataMetrics.failed, 0);
assert.eq(recipientSyncDataMetrics.total, expectedNumRecipientSyncDataCmdSent);
testDonorForgetMigrationAfterMigrationCompletes(donorRst, recipientRst, migrationId, kDBPrefix);
})();
(() => {
jsTest.log("Test the case where the migration aborts");
const migrationId = UUID();
const migrationOpts = {
migrationIdString: extractUUIDFromObject(migrationId),
recipientConnString: recipientRst.getURL(),
dbPrefix: kDBPrefix,
readPreference: {mode: "primary"},
};
let abortFp = configureFailPoint(donorPrimary, "abortTenantMigrationAfterBlockingStarts");
const res =
assert.commandWorked(TenantMigrationUtil.startMigration(donorPrimary.host, migrationOpts));
assert.eq(res.state, "aborted");
abortFp.off();
const donorDoc = configDonorsColl.findOne({databasePrefix: kDBPrefix});
const abortOplogEntry =
donorPrimary.getDB("local").oplog.rs.findOne({ns: kConfigDonorsNS, op: "u", o: donorDoc});
assert.eq(donorDoc.state, "aborted");
assert.eq(donorDoc.commitOrAbortOpTime.ts, abortOplogEntry.ts);
let mtab;
assert.soon(() => {
mtab = donorPrimary.adminCommand({serverStatus: 1}).tenantMigrationAccessBlocker;
return mtab[kDBPrefix].access === TenantMigrationUtil.accessState.kAllow;
});
assert(mtab[kDBPrefix].commitOrAbortOpTime);
expectedNumRecipientSyncDataCmdSent += 2;
const recipientSyncDataMetrics =
recipientPrimary.adminCommand({serverStatus: 1}).metrics.commands.recipientSyncData;
assert.eq(recipientSyncDataMetrics.failed, 0);
assert.eq(recipientSyncDataMetrics.total, expectedNumRecipientSyncDataCmdSent);
testDonorForgetMigrationAfterMigrationCompletes(donorRst, recipientRst, migrationId, kDBPrefix);
})();
// Drop the TTL index to make sure that the migration state is still available when the
// donorForgetMigration command is retried.
configDonorsColl.dropIndex({expireAt: 1});
(() => {
jsTest.log("Test that donorForgetMigration can be run multiple times");
const migrationId = UUID();
const migrationOpts = {
migrationIdString: extractUUIDFromObject(migrationId),
recipientConnString: recipientRst.getURL(),
dbPrefix: kDBPrefix,
readPreference: {mode: "primary"},
};
// Verify that donorForgetMigration fails since the migration hasn't started.
assert.commandFailedWithCode(
donorPrimary.adminCommand({donorForgetMigration: 1, migrationId: migrationId}),
ErrorCodes.NoSuchTenantMigration);
const res =
assert.commandWorked(TenantMigrationUtil.startMigration(donorPrimary.host, migrationOpts));
assert.eq(res.state, "committed");
assert.commandWorked(
donorPrimary.adminCommand({donorForgetMigration: 1, migrationId: migrationId}));
// Verify that the retry succeeds.
assert.commandWorked(
donorPrimary.adminCommand({donorForgetMigration: 1, migrationId: migrationId}));
})();
donorRst.stopSet();
recipientRst.stopSet();
})();
|
