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/**
* Test that a migration will:
* 1. Ignore multi-statement transaction prepare conflicts in the clone phase, and
* 2. Pick up the changes for prepared transactions in the transfer mods phase.
*
* @tags: [uses_transactions, uses_prepare_transaction, requires_persistence]
*/
(function() {
"use strict";
load('jstests/libs/chunk_manipulation_util.js');
load('jstests/replsets/rslib.js');
load('jstests/sharding/libs/create_sharded_collection_util.js');
load('jstests/sharding/libs/sharded_transactions_helpers.js');
const dbName = "test";
const collName = "user";
const staticMongod = MongoRunner.runMongod({}); // For startParallelOps.
const TestMode = {
kBasic: 'basic',
kWithStepUp: 'with stepUp',
kWithRestart: 'with restart',
};
let runTest = function(testMode) {
jsTest.log(`Running test in mode ${testMode}`);
const st = new ShardingTest(
{shards: {rs0: {nodes: testMode == TestMode.kWithStepUp ? 2 : 1}, rs1: {nodes: 1}}});
const collection = st.s.getDB(dbName).getCollection(collName);
CreateShardedCollectionUtil.shardCollectionWithChunks(collection, {x: 1}, [
{min: {x: MinKey}, max: {x: 0}, shard: st.shard0.shardName},
{min: {x: 0}, max: {x: 1000}, shard: st.shard0.shardName},
{min: {x: 1000}, max: {x: MaxKey}, shard: st.shard1.shardName},
]);
assert.commandWorked(collection.insert([
{_id: 1, x: -1, note: "move into chunk range being migrated"},
{_id: 2, x: -2, note: "keep out of chunk range being migrated"},
{_id: 3, x: 50, note: "move out of chunk range being migrated"},
{_id: 4, x: 100, note: "keep in chunk range being migrated"},
]));
const lsid = {id: UUID()};
const txnNumber = 0;
let stmtId = 0;
assert.commandWorked(st.s0.getDB(dbName).runCommand({
insert: collName,
documents: [
{_id: 5, x: -1.01, note: "move into chunk range being migrated"},
{_id: 6, x: -2.01, note: "keep out of chunk range being migrated"},
{_id: 7, x: 50.01, note: "move out of chunk range being migrated"},
{_id: 8, x: 100.01, note: "keep in chunk range being migrated"},
],
lsid: lsid,
txnNumber: NumberLong(txnNumber),
stmtId: NumberInt(stmtId++),
startTransaction: true,
autocommit: false,
}));
assert.commandWorked(st.s.getDB(dbName).runCommand({
update: collName,
updates: [
{q: {x: -1}, u: {$set: {x: 5}}},
{q: {x: -2}, u: {$set: {x: -10}}},
{q: {x: 50}, u: {$set: {x: -20}}},
{q: {x: 100}, u: {$set: {x: 500}}},
{q: {x: -1.01}, u: {$set: {x: 5.01}}},
{q: {x: -2.01}, u: {$set: {x: -10.01}}},
{q: {x: 50.01}, u: {$set: {x: -20.01}}},
{q: {x: 100.01}, u: {$set: {x: 500.01}}},
],
lsid: lsid,
txnNumber: NumberLong(txnNumber),
stmtId: NumberInt(stmtId++),
autocommit: false,
}));
const res = assert.commandWorked(st.shard0.getDB(dbName).adminCommand({
prepareTransaction: 1,
lsid: lsid,
txnNumber: NumberLong(txnNumber),
autocommit: false,
writeConcern: {w: "majority"},
}));
let prepareTimestamp = res.prepareTimestamp;
if (testMode == TestMode.kWithStepUp) {
st.rs0.stepUp(st.rs0.getSecondary());
} else if (testMode == TestMode.kWithRestart) {
TestData.skipCollectionAndIndexValidation = true;
st.rs0.restart(st.rs0.getPrimary());
st.rs0.waitForPrimary();
TestData.skipCollectionAndIndexValidation = false;
assert.soon(() => {
try {
st.shard0.getDB(dbName).getCollection(collName).findOne();
return true;
} catch (ex) {
print("Caught expected once exception due to restart: " + tojson(ex));
return false;
}
});
}
const joinMoveChunk =
moveChunkParallel(staticMongod, st.s.host, {x: 1}, null, 'test.user', st.shard1.shardName);
pauseMigrateAtStep(st.shard1, migrateStepNames.catchup);
// The donor shard only ignores prepare conflicts while scanning over the shard key index. We
// wait for donor shard to have finished buffering the RecordIds into memory from scanning over
// the shard key index before committing the transaction. Notably, the donor shard doesn't
// ignore prepare conflicts when fetching the full contents of the documents during calls to
// _migrateClone.
//
// TODO: SERVER-71028 Remove comment after making changes.
waitForMoveChunkStep(st.shard0, moveChunkStepNames.startedMoveChunk);
assert.commandWorked(
st.shard0.getDB(dbName).adminCommand(Object.assign({
commitTransaction: 1,
lsid: lsid,
txnNumber: NumberLong(txnNumber),
autocommit: false,
},
{commitTimestamp: prepareTimestamp})));
unpauseMigrateAtStep(st.shard1, migrateStepNames.catchup);
joinMoveChunk();
class ArrayCursor {
constructor(arr) {
this.i = 0;
this.arr = arr;
}
hasNext() {
return this.i < this.arr.length;
}
next() {
return this.arr[this.i++];
}
}
const expected = new ArrayCursor([
{_id: 1, x: 5, note: "move into chunk range being migrated"},
{_id: 2, x: -10, note: "keep out of chunk range being migrated"},
{_id: 3, x: -20, note: "move out of chunk range being migrated"},
{_id: 4, x: 500, note: "keep in chunk range being migrated"},
{_id: 5, x: 5.01, note: "move into chunk range being migrated"},
{_id: 6, x: -10.01, note: "keep out of chunk range being migrated"},
{_id: 7, x: -20.01, note: "move out of chunk range being migrated"},
{_id: 8, x: 500.01, note: "keep in chunk range being migrated"},
]);
const diff = ((diff) => {
return {
docsWithDifferentContents: diff.docsWithDifferentContents.map(
({first, second}) => ({expected: first, actual: second})),
docsExtraAfterMigration: diff.docsMissingOnFirst,
docsMissingAfterMigration: diff.docsMissingOnSecond,
};
})(DataConsistencyChecker.getDiff(expected, collection.find().sort({_id: 1, x: 1})));
assert.eq(diff, {
docsWithDifferentContents: [],
docsExtraAfterMigration: [],
docsMissingAfterMigration: [],
});
st.stop();
};
runTest(TestMode.kBasic);
runTest(TestMode.kWithStepUp);
runTest(TestMode.kWithRestart);
MongoRunner.stopMongod(staticMongod);
})();
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