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/**
* Validate that capped clustered collections can be written to concurrently.
*
* @tags: [
* # hangAfterCollectionInserts failpoint not available on mongos.
* assumes_against_mongod_not_mongos,
* does_not_support_stepdowns,
* requires_fcv_53,
* requires_replication,
* ]
*/
(function() {
"use strict";
load("jstests/libs/clustered_collections/clustered_collection_util.js");
load("jstests/libs/collection_drop_recreate.js");
load('jstests/libs/dateutil.js');
load("jstests/libs/fail_point_util.js");
load('jstests/libs/parallel_shell_helpers.js');
const replSet = new ReplSetTest({name: "clustered_capped_concurrency", nodes: 1});
replSet.startSet();
replSet.initiate();
// Validate that inserts on a capped collection are serialized, whereas inserts
// on a clustered capped collection are not serialized.
function validateCappedInsertConcurrency(db, coll, clustered, expectedConcurrent) {
assertDropCollection(db, coll.getName());
if (clustered) {
assert.commandWorked(db.createCollection(coll.getName(), {
clusteredIndex: {key: {_id: 1}, unique: true},
capped: true,
expireAfterSeconds: 24 * 60 * 60
}));
} else {
assert.commandWorked(db.createCollection(coll.getName(), {capped: true, size: 100000000}));
}
const ns = coll.getFullName();
const failPointName = "hangAfterCollectionInserts";
const fp = assert.commandWorked(db.adminCommand(
{configureFailPoint: failPointName, mode: "alwaysOn", data: {collectionNS: ns}}));
const timesEntered = fp.count;
const waitForParallelShellToShutDown = startParallelShell(
funWithArgs(function(dbName, collName) {
assert.commandWorked(db.getSiblingDB(dbName)[collName].insertOne({}));
}, db.getName(), coll.getName()), replSet.getPrimary().port);
assert.commandWorked(db.adminCommand({
waitForFailPoint: failPointName,
timesEntered: timesEntered + 1,
maxTimeMS: kDefaultWaitForFailPointTimeout
}));
// There's one and only one in-flight insert to the namespace.
assert.eq(1, db.currentOp({ns: ns, "op": "insert"}).inprog.length);
if (expectedConcurrent) {
// Assert the insert is not serialized - no Metadata resource acquisition.
assert.eq(db.currentOp({ns: ns, "op": "insert"}).inprog[0].lockStats.Metadata, undefined);
} else {
// Assert the insert is serialized - it acquires the Metadata resource in strong exclusive
// mode.
assert.neq(
db.currentOp({ns: ns, "op": "insert"}).inprog[0].lockStats.Metadata.acquireCount.W,
undefined);
}
assert.commandWorked(db.adminCommand({configureFailPoint: failPointName, mode: "off"}));
waitForParallelShellToShutDown();
assertDropCollection(db, coll.getName());
}
// Validate on a standard replicated namespace.
{
const dbName = jsTestName();
const db = replSet.getPrimary().getDB(dbName);
const coll = db.getCollection('c');
validateCappedInsertConcurrency(db, coll, false /*clustered*/, false /*expectedConcurrent*/);
validateCappedInsertConcurrency(db, coll, true /*clustered*/, true /*expectedConcurrent*/);
}
// Validate on an implicitly replicated namespaces.
{
const db = replSet.getPrimary().getDB("config");
const coll = db.getCollection('changes.c');
validateCappedInsertConcurrency(db, coll, false /*clustered*/, false /*expectedConcurrent*/);
// Validate change collections: clustered, capped, implicitly replicated 'config.changes.*'
// namespace.
validateCappedInsertConcurrency(db, coll, true /*clustered*/, true /*expectedConcurrent*/);
}
replSet.stopSet();
})();
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