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/**
* Test that a retryable update or findAndModify write statement that causes a document to change
* its shard key value during resharding is not retryable on the recipient after resharding
* completes.
*
* @tags: [requires_fcv_60]
*/
(function() {
"use strict";
load("jstests/libs/discover_topology.js");
load("jstests/sharding/libs/resharding_test_fixture.js");
load('jstests/sharding/libs/sharded_transactions_helpers.js');
function runTest(reshardInPlace) {
const reshardingTest = new ReshardingTest({numDonors: 2, numRecipients: 2, reshardInPlace});
reshardingTest.setup();
const donorShardNames = reshardingTest.donorShardNames;
const recipientShardNames = reshardingTest.recipientShardNames;
const reshardingOptions = {
primaryShardName: donorShardNames[0],
oldShardKeyPattern: {oldShardKey: 1},
oldShardKeyChunks: [
{min: {oldShardKey: MinKey}, max: {oldShardKey: 0}, shard: donorShardNames[0]},
{min: {oldShardKey: 0}, max: {oldShardKey: MaxKey}, shard: donorShardNames[1]}
],
newShardKeyPattern: {newShardKey: 1},
newShardKeyChunks: [
{min: {newShardKey: MinKey}, max: {newShardKey: 0}, shard: recipientShardNames[0]},
{min: {newShardKey: 0}, max: {newShardKey: MaxKey}, shard: recipientShardNames[1]}
],
};
const dbName = "testDb";
const collName = "mongosTestColl";
const ns = dbName + "." + collName;
const mongosTestColl = reshardingTest.createShardedCollection({
ns: ns,
shardKeyPattern: reshardingOptions.oldShardKeyPattern,
chunks: reshardingOptions.oldShardKeyChunks,
primaryShardName: reshardingOptions.primaryShardName,
});
const mongosConn = mongosTestColl.getMongo();
const mongosTestDB = mongosConn.getDB(dbName);
// Test commands that the shard key of a document in the test collection from change its shard
// key. Note we don't test the remove:true case because the document can't move shards if it is
// being deleted.
const updateCmdObj = {
update: collName,
updates: [
{q: {oldShardKey: -1, newShardKey: -1}, u: {$set: {oldShardKey: 1}}},
],
ordered: false,
lsid: {id: UUID()},
txnNumber: NumberLong(1),
};
const findAndModifyUpdateCmdObj = {
findAndModify: collName,
query: {oldShardKey: -2, newShardKey: -2},
update: {$set: {oldShardKey: 2}},
lsid: {id: UUID()},
txnNumber: NumberLong(2),
};
const findAndModifyUpsertCmdObj = {
findAndModify: collName,
query: {oldShardKey: -3, newShardKey: -3},
update: {$set: {oldShardKey: 3}},
upsert: true,
lsid: {id: UUID()},
txnNumber: NumberLong(3),
};
const expectedTransientErrors = new Set([
ErrorCodes.StaleConfig,
ErrorCodes.NoSuchTransaction,
ErrorCodes.ShardCannotRefreshDueToLocksHeld,
ErrorCodes.LockTimeout,
ErrorCodes.IncompleteTransactionHistory
]);
function runCommandRetryOnTransientErrors(db, cmdObj) {
let res;
assert.soon(() => {
res = db.runCommand(cmdObj);
if (expectedTransientErrors.has(res.code) ||
(res.writeErrors && expectedTransientErrors.has(res.writeErrors[0].code))) {
cmdObj.txnNumber = NumberLong(cmdObj.txnNumber + 1);
return false;
}
assert.commandWorked(res);
return true;
});
return res;
}
assert.commandWorked(mongosTestColl.insert({oldShardKey: -1, newShardKey: -1}));
assert.commandWorked(mongosTestColl.insert({oldShardKey: -2, newShardKey: -2}));
reshardingTest.withReshardingInBackground(
{
newShardKeyPattern: reshardingOptions.newShardKeyPattern,
newChunks: reshardingOptions.newShardKeyChunks,
},
() => {
// The cloneTimestamp is the boundary for whether a retryable write statement will
// be retryable after the resharding operation completes.
assert.soon(() => {
const coordinatorDoc =
mongosConn.getCollection("config.reshardingOperations").findOne({ns: ns});
return coordinatorDoc !== null && coordinatorDoc.cloneTimestamp !== undefined;
});
jsTest.log("Start running retryable writes during resharding");
const updateRes = runCommandRetryOnTransientErrors(mongosTestDB, updateCmdObj);
assert.eq(updateRes.n, 1, tojson(updateRes));
assert.eq(updateRes.nModified, 1, tojson(updateRes));
const findAndModifyUpdateRes =
runCommandRetryOnTransientErrors(mongosTestDB, findAndModifyUpdateCmdObj);
assert.eq(findAndModifyUpdateRes.lastErrorObject.n, 1, tojson(findAndModifyUpdateRes));
assert.eq(findAndModifyUpdateRes.lastErrorObject.updatedExisting,
true,
tojson(findAndModifyUpdateRes));
let findAndModifyUpsertRes =
runCommandRetryOnTransientErrors(mongosTestDB, findAndModifyUpsertCmdObj);
assert.eq(findAndModifyUpsertRes.lastErrorObject.n, 1, tojson(findAndModifyUpsertRes));
assert.eq(findAndModifyUpsertRes.lastErrorObject.updatedExisting,
false,
tojson(findAndModifyUpsertRes));
assert(findAndModifyUpsertRes.lastErrorObject.upserted, tojson(findAndModifyUpsertRes));
jsTest.log("Finished running retryable writes during resharding");
});
assert.eq(mongosTestColl.find({oldShardKey: -1, newShardKey: -1}).itcount(), 0);
assert.eq(mongosTestColl.find({oldShardKey: -2, newShardKey: -2}).itcount(), 0);
assert.eq(mongosTestColl.find({oldShardKey: 1, newShardKey: -1}).itcount(), 1);
assert.eq(mongosTestColl.find({oldShardKey: 2, newShardKey: -2}).itcount(), 1);
assert.eq(mongosTestColl.find({oldShardKey: 3, newShardKey: -3}).itcount(), 1);
jsTest.log("Start retrying retryable writes after resharding");
assert.commandFailedWithCode(mongosTestDB.runCommand(updateCmdObj),
ErrorCodes.IncompleteTransactionHistory);
assert.commandFailedWithCode(mongosTestDB.runCommand(findAndModifyUpdateCmdObj),
ErrorCodes.IncompleteTransactionHistory);
assert.commandFailedWithCode(mongosTestDB.runCommand(findAndModifyUpsertCmdObj),
ErrorCodes.IncompleteTransactionHistory);
jsTest.log("Finished retrying retryable writes after resharding");
assert.eq(mongosTestColl.find({oldShardKey: -1, newShardKey: -1}).itcount(), 0);
assert.eq(mongosTestColl.find({oldShardKey: -2, newShardKey: -2}).itcount(), 0);
assert.eq(mongosTestColl.find({oldShardKey: 1, newShardKey: -1}).itcount(), 1);
assert.eq(mongosTestColl.find({oldShardKey: 2, newShardKey: -2}).itcount(), 1);
assert.eq(mongosTestColl.find({oldShardKey: 3, newShardKey: -3}).itcount(), 1);
reshardingTest.teardown();
}
runTest(true /* reshardInPlace */);
runTest(false /* reshardInPlace */);
})();
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