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/*
* Test that the index commands are correctly propagated if they are executed
* either before, during, or after the initial split critical section.
* @tags: [requires_fcv_44]
*/
(function() {
"use strict";
load("jstests/libs/fail_point_util.js");
load("jstests/libs/parallelTester.js");
load("jstests/sharding/libs/sharded_index_util.js");
/*
* Shards the given collection.
*/
function runShardCollection(host, ns, shardKey) {
const mongos = new Mongo(host);
return mongos.adminCommand({shardCollection: ns, key: shardKey});
}
/*
* Defines zones for the given collection, then runs shardCollection and the given command after
* the given shardCollection fail point is hit. If isBlocked is true, asserts that the command is
* blocked (behind the initial split critical section). Otherwise, asserts that the command
* succeeds.
*/
function runCommandDuringShardCollection(st, ns, shardKey, zones, failpointName, cmd, isBlocked) {
const dbName = ns.split(".")[0];
// Predefine zones for the collection.
for (const zone of zones) {
assert.commandWorked(st.s.adminCommand(
{updateZoneKeyRange: ns, min: zone.min, max: zone.max, zone: zone.name}));
}
// Turn on the fail point on the primary shard and wait for shardCollection to hit the
// fail point.
let failPoint = configureFailPoint(st.shard0, failpointName);
let shardCollThread = new Thread(runShardCollection, st.s.host, ns, shardKey);
shardCollThread.start();
failPoint.wait();
if (isBlocked) {
// Assert that the command eventually times out.
assert.commandFailedWithCode(
st.s.getDB(dbName).runCommand(Object.assign(cmd, {maxTimeMS: 500})),
ErrorCodes.MaxTimeMSExpired);
} else {
assert.commandWorked(st.s.getDB(dbName).runCommand(cmd));
}
// Turn off the fail point and wait for shardCollection to complete.
failPoint.off();
shardCollThread.join();
assert.commandWorked(shardCollThread.returnData());
}
const numShards = 4;
const st = new ShardingTest({shards: numShards});
const allShards = [];
for (let i = 0; i < numShards; i++) {
allShards.push(st["shard" + i]);
}
const dbName = "test";
const testDB = st.s.getDB(dbName);
const shardKey = {
_id: 1
};
const index = {
key: {x: 1},
name: "x_1"
};
const shardToZone = {
[st.shard1.shardName]: {name: "zone1", min: {_id: MinKey}, max: {_id: 0}},
[st.shard2.shardName]: {name: "zone2", min: {_id: 0}, max: {_id: MaxKey}}
};
const zones = Object.values(shardToZone);
const failPoints = [
{
name: "pauseShardCollectionBeforeCriticalSection",
expectedAffectedShards: new Set([st.shard0, st.shard1, st.shard2]),
criticalSectionInProgress: false
},
{
name: "pauseShardCollectionReadOnlyCriticalSection",
expectedAffectedShards: new Set([st.shard0, st.shard1, st.shard2]),
criticalSectionInProgress: true
},
{
name: "pauseShardCollectionCommitPhase",
expectedAffectedShards: new Set([st.shard0, st.shard1, st.shard2]),
criticalSectionInProgress: true
},
{
name: "pauseShardCollectionAfterCriticalSection",
expectedAffectedShards: new Set([st.shard1, st.shard2]),
criticalSectionInProgress: false
}
];
assert.commandWorked(st.s.adminCommand({enableSharding: dbName}));
st.ensurePrimaryShard(dbName, st.shard0.shardName);
for (const [shardName, zone] of Object.entries(shardToZone)) {
assert.commandWorked(st.s.adminCommand({addShardToZone: shardName, zone: zone.name}));
}
failPoints.forEach(failPoint => {
jsTest.log(`Testing createIndexes in step ${failPoint.name}...`);
const collName = "testCreateIndexes" + failPoint.name;
const ns = dbName + "." + collName;
const cmd = {createIndexes: collName, indexes: [index]};
const isBlocked = failPoint.criticalSectionInProgress;
assert.commandWorked(st.s.getDB(dbName).createCollection(collName));
runCommandDuringShardCollection(st, ns, shardKey, zones, failPoint.name, cmd, isBlocked);
if (isBlocked) {
return;
}
// Assert that the index only exists on the targeted shards.
allShards.forEach(shard => {
if (failPoint.expectedAffectedShards.has(shard)) {
ShardedIndexUtil.assertIndexExistsOnShard(shard, dbName, collName, index.key);
} else {
ShardedIndexUtil.assertIndexDoesNotExistOnShard(shard, dbName, collName, index.key);
}
});
});
failPoints.forEach(failPoint => {
jsTest.log(`Testing dropIndexes in step ${failPoint.name}...`);
const collName = "testDropIndexes" + failPoint.name;
const ns = dbName + "." + collName;
const cmd = {dropIndexes: collName, index: index.name};
const isBlocked = failPoint.criticalSectionInProgress;
assert.commandWorked(st.s.getDB(dbName).createCollection(collName));
assert.commandWorked(
st.s.getDB(dbName).runCommand({createIndexes: collName, indexes: [index]}));
runCommandDuringShardCollection(st, ns, shardKey, zones, failPoint.name, cmd, isBlocked);
if (isBlocked) {
return;
}
// Assert that the index does not exist on any shards.
allShards.forEach(shard => {
const usedToOwnChunks = (shard.shardName === st.shard0.shardName);
if (failPoint.expectedAffectedShards.has(shard) || !usedToOwnChunks) {
ShardedIndexUtil.assertIndexDoesNotExistOnShard(shard, dbName, collName, index.key);
} else {
ShardedIndexUtil.assertIndexExistsOnShard(st.shard0, dbName, collName, index.key);
}
});
});
failPoints.forEach(failPoint => {
jsTest.log(`Testing collMod in step ${failPoint.name}...`);
const collName = "testCollMod" + failPoint.name;
const ns = dbName + "." + collName;
const cmd = {collMod: collName, validator: {x: {$type: "string"}}};
const isBlocked = failPoint.criticalSectionInProgress;
assert.commandWorked(st.s.getDB(dbName).createCollection(collName));
runCommandDuringShardCollection(st, ns, shardKey, zones, failPoint.name, cmd, isBlocked);
if (isBlocked) {
return;
}
// Assert that only the targeted shards do document validation.
allShards.forEach(shard => {
if (failPoint.expectedAffectedShards.has(shard)) {
assert.commandFailedWithCode(shard.getCollection(ns).insert({x: 1}),
ErrorCodes.DocumentValidationFailure);
} else {
assert.commandWorked(shard.getCollection(ns).insert({x: 1}));
}
});
});
st.stop();
})();
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