64 lines
2.5 KiB
JavaScript
64 lines
2.5 KiB
JavaScript
'use strict';
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/**
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* explain_count.js
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*
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* Runs explain() and count() on a collection.
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*/
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load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
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load('jstests/concurrency/fsm_workloads/explain.js'); // for $config
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load('jstests/concurrency/fsm_workload_helpers/server_types.js'); // for isMongos
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load('jstests/libs/analyze_plan.js'); // for planHasStage
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var $config = extendWorkload($config, function($config, $super) {
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function assertNCounted(num, obj, db) {
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var stage = obj.executionStats.executionStages;
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// get sharded stage(s) if counting on mongos
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if (isMongos(db)) {
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stage = stage.shards[0].executionStages;
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}
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assertWhenOwnColl.eq(num, stage.nCounted);
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}
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$config.states = Object.extend({
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explainBasicCount: function explainBasicCount(db, collName) {
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var res = db[collName].explain().count();
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assertAlways.commandWorked(res);
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assertAlways(planHasStage(res.queryPlanner.winningPlan, 'COUNT'));
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},
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explainCountHint: function explainCountHint(db, collName) {
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assertWhenOwnColl(function() {
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var res = db[collName].explain().find({i: this.nInserted / 2}).hint({i: 1}).count();
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assertWhenOwnColl.commandWorked(res);
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assertWhenOwnColl(planHasStage(res.queryPlanner.winningPlan, 'COUNT'));
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assertWhenOwnColl(planHasStage(res.queryPlanner.winningPlan, 'COUNT_SCAN'));
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});
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},
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explainCountNoSkipLimit: function explainCountNoSkipLimit(db, collName) {
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var res = db[collName]
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.explain('executionStats')
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.find({i: this.nInserted})
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.skip(1)
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.count(false);
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assertAlways.commandWorked(res);
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assertNCounted(1, res, db);
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},
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explainCountSkipLimit: function explainCountSkipLimit(db, collName) {
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var res = db[collName]
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.explain('executionStats')
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.find({i: this.nInserted})
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.skip(1)
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.count(true);
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assertAlways.commandWorked(res);
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assertNCounted(0, res, db);
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}
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},
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$super.states);
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$config.transitions = Object.extend(
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{explain: $config.data.assignEqualProbsToTransitions($config.states)}, $super.transitions);
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return $config;
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});
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