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/**
* Tests the behavior of setIndexCommitQuorum when routed through a mongos.
*
* @tags: [requires_fcv_51]
*/
(function() {
"use strict";
load("jstests/libs/fail_point_util.js");
load("jstests/sharding/libs/create_sharded_collection_util.js");
const st = new ShardingTest({shards: 2, mongos: 1, rs: {nodes: 2}});
const dbName = "testDB";
const collName = "coll";
const mongosDB = st.s0.getDB(dbName);
const shard0 = st.shard0.rs.getPrimary();
const generateCreateIndexThread = (host, dbName, collName) => {
return new Thread(function(host, dbName, collName) {
const mongos = new Mongo(host);
const db = mongos.getDB(dbName);
// Use the index builds coordinator for a two-phase index build.
assert.commandWorked(db.runCommand({
createIndexes: collName,
indexes: [{key: {idxKey: 1}, name: 'idxKey_1'}],
commitQuorum: "majority"
}));
}, host, dbName, collName);
};
// When setIndexCommitQuorum is sent by the mongos, the response follows the format:
// {
// raw: {
// "<shard0URL>": {
// <response from setIndexCommitQuorum being run on shard>
// },
// "<shard1URL>": {....}
// }
// ok: <>
// ...
// }
//
// Returns the shard's corresponding entry in the "raw" field of the mongosResponse.
const extractShardReplyFromResponse = (shard, mongosResponse) => {
assert(mongosResponse.raw);
const shardURL = shard.rs.getURL();
return mongosResponse.raw[shardURL];
};
assert.commandWorked(st.s.adminCommand({enableSharding: dbName}));
st.ensurePrimaryShard(dbName, st.shard0.shardName);
jsTest.log("Testing setIndexCommitQuorum from a mongos can succeed");
// Create a sharded collection where only shard0 owns chunks.
CreateShardedCollectionUtil.shardCollectionWithChunks(mongosDB[collName], {_id: 1}, [
{min: {_id: MinKey}, max: {_id: MaxKey}, shard: st.shard0.shardName},
]);
assert.commandWorked(mongosDB[collName].insert({_id: 1}));
let createIndexThread = generateCreateIndexThread(st.s0.host, dbName, collName);
let createIndexFailpoint = configureFailPoint(shard0, "hangAfterIndexBuildFirstDrain");
createIndexThread.start();
createIndexFailpoint.wait();
// Confirm mongos succeeds when only one shard owns chunks (and data for the collection).
assert.commandWorked(mongosDB.runCommand(
{setIndexCommitQuorum: collName, indexNames: ["idxKey_1"], commitQuorum: 2}));
createIndexFailpoint.off();
createIndexThread.join();
assert(mongosDB[collName].drop());
jsTest.log("Testing setIndexCommitQuorum from a mongos fails but reports partial success");
// In the event that setIndexCommitQuorum succeeds on one shard, but fails on another, the mongos
// setIndexCommitQuorum should return an error and include information on what shards
// failed/succeeded.
// Create a sharded collection where both shards own chunks, but only shard0 bears data.
CreateShardedCollectionUtil.shardCollectionWithChunks(mongosDB[collName], {_id: 1}, [
{min: {_id: MinKey}, max: {_id: 10}, shard: st.shard0.shardName},
{min: {_id: 10}, max: {_id: MaxKey}, shard: st.shard1.shardName},
]);
assert.commandWorked(mongosDB[collName].insert({_id: 1}));
createIndexThread = generateCreateIndexThread(st.s0.host, dbName, collName);
createIndexFailpoint = configureFailPoint(shard0, "hangAfterIndexBuildFirstDrain");
createIndexThread.start();
createIndexFailpoint.wait();
const res = assert.commandFailedWithCode(
mongosDB.runCommand(
{setIndexCommitQuorum: collName, indexNames: ["idxKey_1"], commitQuorum: 2}),
ErrorCodes.IndexNotFound);
// Confirm the mongos reports shard0 successfully set its index commit quorum despite the mongos
// command failing.
const shard0Reply = extractShardReplyFromResponse(st.shard0, res);
assert.eq(shard0Reply.ok, 1);
// Confirm shard1 caused the command to fail since it didn't actually own any data for the
// collection.
const shard1Reply = extractShardReplyFromResponse(st.shard1, res);
assert.eq(shard1Reply.ok, 0);
assert.eq(shard1Reply.code, ErrorCodes.IndexNotFound);
createIndexFailpoint.off();
createIndexThread.join();
st.stop();
}());
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