jstests/concurrency/fsm_workloads/findAndModify_update_queue_unindexed.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

'use strict';

/**
 * findAndModify_update_queue_unindexed.js
 *
 * This is the same workload as findAndModify_update_queue.js, but without the relevant index.
 *
 * The lack of an index that could satisfy the sort forces the findAndModify operations to scan all
 * the matching documents in order to find the relevant document. This increases the amount of work
 * each findAndModify operation has to do before getting to the matching document, and thus
 * increases the chance of a write conflict because each concurrent findAndModify operation is
 * trying to update the same document from the queue.
 *
 * This workload was designed to reproduce SERVER-21434.
 */
load('jstests/concurrency/fsm_libs/extend_workload.js');                  // for extendWorkload
load('jstests/concurrency/fsm_workloads/findAndModify_update_queue.js');  // for $config

var $config = extendWorkload($config,
                             function($config, $super) {

                                 // Use the workload name as the database name, since the workload
                                 // name is assumed to be unique.
                                 $config.data.uniqueDBName = 'findAndModify_update_queue_unindexed';

                                 $config.data.getIndexSpecs = function getIndexSpecs() {
                                     return [];
                                 };

                                 return $config;
                             });