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/**
* Tests that when run with waitForLock=false, collStats does not conflict with a global MODE_X
* lock, but rather returns early.
*/
(function() {
"use strict";
load("jstests/libs/parallel_shell_helpers.js");
load("jstests/libs/wait_for_command.js");
const dbName = "test";
const collName = "collStats_no_wait_for_lock";
const testDB = db.getSiblingDB(dbName);
const testColl = testDB.getCollection(collName);
assert.commandWorked(testColl.insert({a: 1}));
jsTestLog("Starting the sleep command to take locks");
let globalXLockSleepJoin = startParallelShell(() => {
jsTestLog("Parallel Shell: about to start sleep command");
assert.commandFailedWithCode(db.adminCommand({
sleep: 1,
secs: 18000,
// Global MODE_X lock (and RSTL MODE_IX).
w: true,
$comment: "Global lock sleep"
}),
ErrorCodes.Interrupted);
}, testDB.getMongo().port);
jsTestLog("Waiting for the sleep command to start and fetch the opID");
const sleepCmdOpID = waitForCommand(
"sleepCmd",
op => (op["ns"] == "admin.$cmd" && op["command"]["$comment"] == "Global lock sleep"),
testDB.getSiblingDB("admin"));
jsTestLog("Wait for the sleep command to log that the Global lock was acquired");
checkLog.containsJson(testDB, 6001601);
try {
jsTestLog("Running collStats concurrently with the global X lock");
// The collStats result should not contain any statistics since we are unable to acquire the
// lock. The only fields present in the result should be 'ok' and 'ns', since 'waitForLock' is
// set to false.
const res = assert.commandWorked(
testDB.runCommand({collStats: collName, waitForLock: false, maxTimeMS: 20 * 1000}));
assert(res.hasOwnProperty("ns"));
assert.eq(Object.keys(res).length, 2);
} finally {
jsTestLog("Ensure the sleep cmd releases the lock so that the server can shutdown");
assert.commandWorked(testDB.getSiblingDB("admin").killOp(sleepCmdOpID)); // kill the sleep cmd
globalXLockSleepJoin(); // wait for the thread running the sleep cmd to finish
}
})();
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