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(function() {
"use strict";
load("jstests/libs/optimizer_utils.js"); // For checkCascadesOptimizerEnabled.
if (!checkCascadesOptimizerEnabled(db)) {
jsTestLog("Skipping test because the optimizer is not enabled");
return;
}
var coll = db.cqf_testCovIndxScan;
coll.drop();
coll.createIndex({f_0: 1, f_1: 1, f_2: 1, f_3: 1, f_4: 1});
coll.getIndexes();
coll.insertMany([
{f_0: 2, f_1: 8, f_2: 2, f_3: 0, f_4: 2}, {f_0: 7, f_1: 9, f_2: 8, f_3: 3, f_4: 3},
{f_0: 6, f_1: 6, f_2: 2, f_3: 8, f_4: 3}, {f_0: 9, f_1: 2, f_2: 3, f_3: 5, f_4: 7},
{f_0: 7, f_1: 8, f_2: 8, f_3: 2, f_4: 9}, {f_0: 7, f_1: 1, f_2: 7, f_3: 3, f_4: 1},
{f_0: 7, f_1: 3, f_2: 4, f_3: 0, f_4: 7}, {f_0: 8, f_1: 4, f_2: 5, f_3: 6, f_4: 0},
{f_0: 5, f_1: 2, f_2: 0, f_3: 7, f_4: 0}, {f_0: 0, f_1: 2, f_2: 1, f_3: 9, f_4: 2},
{f_0: 6, f_1: 0, f_2: 5, f_3: 9, f_4: 1}, {f_0: 0, f_1: 1, f_2: 6, f_3: 8, f_4: 6},
{f_0: 6, f_1: 5, f_2: 3, f_3: 8, f_4: 5}, {f_0: 2, f_1: 9, f_2: 7, f_3: 2, f_4: 3},
{f_0: 0, f_1: 6, f_2: 9, f_3: 6, f_4: 8}, {f_0: 5, f_1: 7, f_2: 8, f_3: 1, f_4: 4},
{f_0: 8, f_1: 5, f_2: 1, f_3: 4, f_4: 6}, {f_0: 6, f_1: 2, f_2: 8, f_3: 4, f_4: 3},
{f_0: 1, f_1: 6, f_2: 2, f_3: 0, f_4: 3}, {f_0: 1, f_1: 8, f_2: 2, f_3: 5, f_4: 2}
]);
const nDocs = 20;
try {
assert.commandWorked(
db.adminCommand({setParameter: 1, internalCascadesOptimizerFastIndexNullHandling: true}));
{
// Covered plan. Also an index scan on all fields is cheaper than a collection scan.
// TODO SERVER-71553 The Cost Model is overriden to preserve IndexScan plan.
const res = runCommandWithCostModel(() => coll.explain("executionStats").aggregate([
{'$project': {_id: 0, f_0: 1, f_1: 1, f_2: 1, f_3: 1, f_4: 1}}
]),
{"indexScanStartupCost": 1e-9});
assert.eq(nDocs, res.executionStats.nReturned);
assertValueOnPlanPath("IndexScan", res, "child.child.nodeType");
}
{
// We need to fetch since we do not restrict the set of output fields.
const res = coll.explain("executionStats").aggregate([
{'$sort': {f_0: 1, f_1: 1, f_2: 1, f_3: 1, f_4: 1}}
]);
assert.eq(nDocs, res.executionStats.nReturned);
assertValueOnPlanPath("Seek", res, "child.rightChild.child.nodeType");
assertValueOnPlanPath("IndexScan", res, "child.leftChild.nodeType");
}
{
// Covered plan.
const res = coll.explain("executionStats").aggregate([
{'$project': {_id: 0, f_0: 1, f_1: 1, f_2: 1, f_3: 1, f_4: 1}},
{'$sort': {f_0: 1, f_1: 1, f_2: 1, f_3: 1, f_4: 1}}
]);
assert.eq(nDocs, res.executionStats.nReturned);
assertValueOnPlanPath("IndexScan", res, "child.child.nodeType");
}
{
// Covered plan.
const res = coll.explain("executionStats").aggregate([
{'$sort': {f_0: 1, f_1: 1, f_2: 1, f_3: 1, f_4: 1}},
{'$project': {_id: 0, f_0: 1, f_1: 1, f_2: 1, f_3: 1, f_4: 1}}
]);
assert.eq(nDocs, res.executionStats.nReturned);
assertValueOnPlanPath("IndexScan", res, "child.child.nodeType");
}
} finally {
assert.commandWorked(
db.adminCommand({setParameter: 1, internalCascadesOptimizerFastIndexNullHandling: false}));
}
}());
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