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/**
* 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, incompatible_with_eft]
*/
(function() {
"use strict";
load("jstests/libs/fail_point_util.js");
load("jstests/libs/parallelTester.js");
load("jstests/libs/uuid_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 testDonorForgetMigration(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(
() => donorPrimary.getCollection(kConfigDonorsNS).count({databasePrefix: dbPrefix}) === 0);
const donorRecipientMonitorPoolStats =
donorPrimary.adminCommand({connPoolStats: 1}).replicaSets;
assert.eq(Object.keys(donorRecipientMonitorPoolStats).length, 0);
}
// An object that mirrors the access states for the TenantMigrationAccessBlocker.
const accessState = {
kAllow: 0,
kBlockingWrites: 1,
kBlockingReadsAndWrites: 2,
kReject: 3
};
// Use a shorter delay since the default delay is very large.
const kGarbageCollectionDelayMS = 3 * 1000;
const donorRst = new ReplSetTest({
nodes: [{}, {rsConfig: {priority: 0}}, {rsConfig: {priority: 0}}],
name: "donor",
nodeOptions: {
setParameter: {
enableTenantMigrations: true,
tenantMigrationGarbageCollectionDelayMS: kGarbageCollectionDelayMS
}
}
});
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();
function startMigration(host, recipientConnString, dbPrefix, migrationIdString) {
const primary = new Mongo(host);
assert.commandWorked(primary.adminCommand({
donorStartMigration: 1,
migrationId: UUID(migrationIdString),
recipientConnectionString: recipientConnString,
databasePrefix: dbPrefix,
readPreference: {mode: "primary"}
}));
}
let migrationThread = new Thread(startMigration,
donorPrimary.host,
kRecipientConnString,
kDBPrefix,
extractUUIDFromObject(migrationId));
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, 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);
// Allow the migration to complete.
blockingFp.off();
migrationThread.join();
mtab = donorPrimary.adminCommand({serverStatus: 1}).tenantMigrationAccessBlocker;
assert.eq(mtab[kDBPrefix].access, accessState.kReject);
assert(mtab[kDBPrefix].commitOrAbortOpTime);
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);
expectedNumRecipientSyncDataCmdSent += 2;
const recipientSyncDataMetrics =
recipientPrimary.adminCommand({serverStatus: 1}).metrics.commands.recipientSyncData;
assert.eq(recipientSyncDataMetrics.failed, 0);
assert.eq(recipientSyncDataMetrics.total, expectedNumRecipientSyncDataCmdSent);
testDonorForgetMigration(donorRst, recipientRst, migrationId, kDBPrefix);
})();
(() => {
jsTest.log("Test the case where the migration aborts");
const migrationId = UUID();
let configDonorsColl = donorPrimary.getCollection(kConfigDonorsNS);
configDonorsColl.createIndex({expireAt: 1}, {expireAfterSeconds: 0});
let abortFp = configureFailPoint(donorPrimary, "abortTenantMigrationAfterBlockingStarts");
assert.commandFailedWithCode(donorPrimary.adminCommand({
donorStartMigration: 1,
migrationId: migrationId,
recipientConnectionString: kRecipientConnString,
databasePrefix: kDBPrefix,
readPreference: {mode: "primary"}
}),
ErrorCodes.TenantMigrationAborted);
abortFp.off();
const mtab = donorPrimary.adminCommand({serverStatus: 1}).tenantMigrationAccessBlocker;
assert.eq(mtab[kDBPrefix].access, accessState.kAllow);
assert(!mtab[kDBPrefix].commitOrAbortOpTime);
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);
expectedNumRecipientSyncDataCmdSent += 2;
const recipientSyncDataMetrics =
recipientPrimary.adminCommand({serverStatus: 1}).metrics.commands.recipientSyncData;
assert.eq(recipientSyncDataMetrics.failed, 0);
assert.eq(recipientSyncDataMetrics.total, expectedNumRecipientSyncDataCmdSent);
testDonorForgetMigration(donorRst, recipientRst, migrationId, kDBPrefix);
})();
donorRst.stopSet();
recipientRst.stopSet();
})();
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