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/**
* Tests that non-timestamped reads are not allowed on the donor after the migration has committed
* so that we typically provide read-your-own-write guarantees for primary reads across tenant
* migrations when there is no other failover.
*
* @tags: [requires_fcv_49, requires_majority_read_concern, incompatible_with_eft,
* incompatible_with_windows_tls, incompatible_with_macos, requires_persistence]
*/
(function() {
"use strict";
load("jstests/replsets/libs/tenant_migration_test.js");
load("jstests/replsets/libs/tenant_migration_util.js");
load("jstests/libs/uuid_util.js");
load("jstests/libs/fail_point_util.js"); // For configureFailPoint().
const tenantMigrationTest =
new TenantMigrationTest({name: jsTestName(), allowStaleReadsOnDonor: false});
if (!tenantMigrationTest.isFeatureFlagEnabled()) {
jsTestLog("Skipping test because the tenant migrations feature flag is disabled");
return;
}
const kTenantId = "testTenantId";
const kDbName = tenantMigrationTest.tenantDB(kTenantId, "testDB");
const kCollName = "testColl";
const donorPrimary = tenantMigrationTest.getDonorPrimary();
tenantMigrationTest.insertDonorDB(kDbName, kCollName, [...Array(10).keys()].map(x => ({x: x})));
const donorDB = donorPrimary.getDB(kDbName);
const cursor = assert
.commandWorked(donorDB.runCommand({
find: kCollName,
batchSize: 5,
}))
.cursor;
assert.eq(5, cursor.firstBatch.length, tojson(cursor));
assert.neq(0, cursor.id, tojson(cursor));
jsTestLog(`Started cursor id ${cursor.id} on the donor before the migration`);
const migrationId = UUID();
const migrationOpts = {
migrationIdString: extractUUIDFromObject(migrationId),
tenantId: kTenantId,
};
TenantMigrationTest.assertCommitted(tenantMigrationTest.runMigration(migrationOpts));
// Test that getMore works after the migration has committed.
jsTestLog(`Testing getMore on cursor id ${cursor.id} on the donor after the migration`);
assert.commandWorked(donorDB.runCommand({getMore: cursor.id, collection: kCollName}));
// Test that local and majority reads are no longer allowed on the donor.
const testCases = {
find: {command: {find: kCollName}},
count: {command: {count: kCollName}},
distinct: {command: {distinct: kCollName, key: "x", query: {}}},
aggregate: {command: {aggregate: kCollName, pipeline: [{$match: {}}], cursor: {}}},
mapReduce: {
command: {
mapReduce: kCollName,
map: () => {
emit(this.x, 1);
},
reduce: (key, value) => {
return 1;
},
out: {inline: 1}
},
skipReadConcernMajority: true,
},
findAndModify: {
command: {findAndModify: kCollName, query: {x: 1}, update: {$set: {x: 1}}},
skipReadConcernMajority: true,
},
update: {
// No-op write due to stale read is also not allowed.
command: {update: kCollName, updates: [{q: {x: 1}, u: {$set: {x: 1}}}]},
skipReadConcernMajority: true,
},
delete: {
// No-op write due to stale read is also not allowed.
command: {delete: kCollName, deletes: [{q: {x: 100}, limit: 1}]},
skipReadConcernMajority: true,
},
listCollections: {
command: {listCollections: 1},
skipReadConcernMajority: true,
},
listIndexes: {
command: {listIndexes: kCollName},
skipReadConcernMajority: true,
},
};
const readConcerns = {
local: {level: "local"},
majority: {level: "majority"},
};
for (const [testCaseName, testCase] of Object.entries(testCases)) {
for (const [readConcernName, readConcern] of Object.entries(readConcerns)) {
if (testCase.skipReadConcernMajority && readConcernName === "majority") {
continue;
}
jsTest.log(`Testing ${testCaseName} with readConcern ${readConcernName}`);
let cmd = testCase.command;
cmd.readConcern = readConcern;
assert.commandFailedWithCode(donorDB.runCommand(cmd), ErrorCodes.TenantMigrationCommitted);
}
}
// Enable stale reads on the donor set so that end of test data consistency check can pass.
tenantMigrationTest.getDonorRst().nodes.forEach(
node => assert.commandWorked(node.adminCommand(
{configureFailPoint: "tenantMigrationDonorAllowsNonTimestampedReads", mode: "alwaysOn"})));
tenantMigrationTest.stop();
})();
|
