Files
mongo/jstests/multiVersion/genericBinVersion/migration_between_mixed_version_mongods.js
Steve McClure 1ffbc6c2e9 SERVER-109432: Autofix JS var usage to favor let (#40637)
GitOrigin-RevId: 9674b7db36a0f3f650d39c1e3fb2ad6ff2141cfb
2025-08-28 19:21:01 +00:00

107 lines
3.7 KiB
JavaScript

//
// Testing migrations between latest and last-lts mongod versions, where the
// donor is the latest version and the recipient the last-lts, and vice versa.
// Migrations should be successful.
//
import "jstests/multiVersion/libs/verify_versions.js";
import {ShardingTest} from "jstests/libs/shardingtest.js";
// Checking UUID consistency involves talking to a shard node, which in this test is shutdown
TestData.skipCheckingUUIDsConsistentAcrossCluster = true;
let options = {
shards: [{binVersion: "last-lts"}, {binVersion: "last-lts"}, {binVersion: "latest"}, {binVersion: "latest"}],
mongos: 1,
other: {mongosOptions: {binVersion: "last-lts"}},
};
let st = new ShardingTest(options);
st.stopBalancer();
assert.binVersion(st.shard0, "last-lts");
assert.binVersion(st.shard1, "last-lts");
assert.binVersion(st.shard2, "latest");
assert.binVersion(st.shard3, "latest");
assert.binVersion(st.s0, "last-lts");
const fooDB = "fooTest";
const barDB = "barTest";
let mongos = st.s0,
admin = mongos.getDB("admin"),
shards = mongos.getCollection("config.shards").find().toArray();
assert.commandWorked(admin.runCommand({enableSharding: fooDB, primaryShard: shards[0]._id}));
assert.commandWorked(admin.runCommand({enableSharding: barDB, primaryShard: shards[3]._id}));
let fooNS = fooDB + ".foo",
fooColl = mongos.getCollection(fooNS),
fooDonor = st.shard0,
fooRecipient = st.shard2,
fooDonorColl = fooDonor.getCollection(fooNS),
fooRecipientColl = fooRecipient.getCollection(fooNS),
barNS = barDB + ".foo",
barColl = mongos.getCollection(barNS),
barDonor = st.shard3,
barRecipient = st.shard1,
barDonorColl = barDonor.getCollection(barNS),
barRecipientColl = barRecipient.getCollection(barNS);
assert.commandWorked(admin.runCommand({shardCollection: fooNS, key: {a: 1}}));
assert.commandWorked(admin.runCommand({split: fooNS, middle: {a: 10}}));
assert.commandWorked(admin.runCommand({shardCollection: barNS, key: {a: 1}}));
assert.commandWorked(admin.runCommand({split: barNS, middle: {a: 10}}));
assert.commandWorked(fooColl.insert({a: 0}));
assert.commandWorked(fooColl.insert({a: 10}));
assert.eq(0, fooRecipientColl.count());
assert.eq(2, fooDonorColl.count());
assert.eq(2, fooColl.count());
assert.commandWorked(barColl.insert({a: 0}));
assert.commandWorked(barColl.insert({a: 10}));
assert.eq(0, barRecipientColl.count());
assert.eq(2, barDonorColl.count());
assert.eq(2, barColl.count());
/**
* Perform two migrations:
* shard0 (last-lts) -> foo chunk -> shard2 (latest)
* shard3 (latest) -> bar chunk -> shard1 (last-lts)
*/
assert.commandWorked(admin.runCommand({moveChunk: fooNS, find: {a: 10}, to: shards[2]._id, _waitForDelete: true}));
assert.commandWorked(admin.runCommand({moveChunk: barNS, find: {a: 10}, to: shards[1]._id, _waitForDelete: true}));
assert.eq(
1,
fooRecipientColl.count(),
"Foo collection migration failed. " + "Last-lts -> latest mongod version migration failure.",
);
assert.eq(
1,
fooDonorColl.count(),
"Foo donor lost its document. " + "Last-lts -> latest mongod version migration failure.",
);
assert.eq(
2,
fooColl.count(),
"Incorrect number of documents in foo collection. " + "Last-lts -> latest mongod version migration failure.",
);
assert.eq(
1,
barRecipientColl.count(),
"Bar collection migration failed. " + "Latest -> last-lts mongod version migration failure.",
);
assert.eq(
1,
barDonorColl.count(),
"Bar donor lost its document. " + "Latest -> last-lts mongod version migration failure.",
);
assert.eq(
2,
barColl.count(),
"Incorrect number of documents in bar collection. " + "Latest -> last-lts mongod version migration failure.",
);
st.stop();