83 lines
2.8 KiB
JavaScript
83 lines
2.8 KiB
JavaScript
/**
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* Tests running explain on a variety of explainable commands (find, update, remove, etc.) when
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* there are multiple plans available. This is a regression test for SERVER-20849 and SERVER-21376.
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*/
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(function () {
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"use strict";
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var coll = db.explainMultiPlan;
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coll.drop();
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// Create indices to ensure there are multiple plans available.
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assert.commandWorked(coll.ensureIndex({a: 1, b: 1}));
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assert.commandWorked(coll.ensureIndex({a: 1, b: -1}));
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// Insert some data to work with.
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var bulk = coll.initializeOrderedBulkOp();
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var nDocs = 100;
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for (var i = 0; i < nDocs; ++i) {
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bulk.insert({a: i, b: nDocs - i});
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}
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bulk.execute();
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// SERVER-20849: The following commands should not crash the server.
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").update({a: {$gte: 1}}, {$set: {x: 0}});
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});
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").remove({a: {$gte: 1}});
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});
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").findAndModify({query: {a: {$gte: 1}}, remove: true});
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});
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").findAndModify({query: {a: {$gte: 1}}, update: true});
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});
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").find({a: {$gte: 1}}).finish();
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});
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").count({a: {$gte: 1}});
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});
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").distinct("a", {a: {$gte: 1}});
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});
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assert.doesNotThrow(function() {
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coll.explain("allPlansExecution").group({
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key: {a: 1},
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cond: {a: {$gte: 1}},
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reduce: function (curr, result) {},
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initial: {}
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});
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});
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// SERVER-21376: Make sure the 'rejectedPlans' field is filled in appropriately.
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function assertHasRejectedPlans(explainOutput) {
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var queryPlannerOutput = explainOutput.queryPlanner;
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// The 'rejectedPlans' section will be in a different place if passed through a mongos.
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if ("SINGLE_SHARD" == queryPlannerOutput.winningPlan.stage) {
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var shards = queryPlannerOutput.winningPlan.shards;
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shards.forEach(function assertShardHasRejectedPlans(shard) {
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assert.gt(shard.rejectedPlans.length, 0);
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});
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} else {
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assert.gt(queryPlannerOutput.rejectedPlans.length, 0);
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}
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}
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var res = coll.explain("queryPlanner").find({a: {$gte: 1}}).finish();
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assert.commandWorked(res);
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assertHasRejectedPlans(res);
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res = coll.explain("executionStats").find({a: {$gte: 1}}).finish();
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assert.commandWorked(res);
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assertHasRejectedPlans(res);
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}());
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