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
32
33
34
35
36
37
38
39
40
41
42
43
|
/**
* Tests that queries with a negation of a comparison to 'null' with '$eq', '$gte', and 'lte' do
* not incorrectly re-use query plans in cache that may be cause incorrect behavior due to null
* semantics. This test was initially designed to reproduce incorrect plan cache behavior bug in
* SERVER-56468.
* @tags: [
* does_not_support_stepdowns
* ]
*/
(function() {
"use strict";
const coll = db.neq_null_correctly_cache;
coll.drop();
assert.commandWorked(coll.createIndex({val: 1}));
assert.commandWorked(coll.insertMany([{val: []}, {val: true}, {val: true}]));
function runTest(testQueryPred, cachedQueryPred) {
coll.getPlanCache().clear();
// The 'testQueryPred' is always a null equality query of some form. All three of the documents
// in the collection should match this not-equal-to-null predicate.
assert.eq(3,
coll.find({val: {$not: testQueryPred}}, {_id: 0, val: 1}).sort({val: 1}).itcount());
// Run a query twice to create an active plan cache entry.
for (let i = 0; i < 2; ++i) {
assert.eq(
1,
coll.find({val: {$not: cachedQueryPred}}, {_id: 0, val: 1}).sort({val: 1}).itcount());
}
// The results from the original query should not have changed, despite any possible changes in
// the state of the plan cache from the previous query.
assert.eq(3,
coll.find({val: {$not: testQueryPred}}, {_id: 0, val: 1}).sort({val: 1}).itcount());
}
runTest({$eq: null}, {$eq: true});
runTest({$gte: null}, {$gte: true});
runTest({$lte: null}, {$lte: true});
}());
|
