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// @tags: [
// # Cannot implicitly shard accessed collections because of extra shard key index in sharded
// # collection.
// assumes_no_implicit_index_creation,
//
// # Builds index in the background
// requires_background_index,
//
// requires_fcv_47,
// ]
// Test partial index creation and drops.
(function() {
"use strict";
var coll = db.index_partial_create_drop;
var getNumKeys = function(idxName) {
var res = assert.commandWorked(coll.validate({full: true}));
var kpi;
var isShardedNS = res.hasOwnProperty('raw');
if (isShardedNS) {
kpi = res.raw[Object.getOwnPropertyNames(res.raw)[0]].keysPerIndex;
} else {
kpi = res.keysPerIndex;
}
return kpi[idxName];
};
coll.drop();
// Check bad filter spec on create.
assert.commandFailed(coll.createIndex({x: 1}, {partialFilterExpression: 5}));
assert.commandFailed(coll.createIndex({x: 1}, {partialFilterExpression: {x: {$asdasd: 3}}}));
assert.commandFailed(coll.createIndex({x: 1}, {partialFilterExpression: {$and: 5}}));
assert.commandFailed(coll.createIndex({x: 1}, {partialFilterExpression: {x: /abc/}}));
// Use of $expr is banned in a partial index filter.
assert.commandFailed(
coll.createIndex({x: 1}, {partialFilterExpression: {$expr: {$eq: ["$x", 5]}}}));
assert.commandFailed(coll.createIndex(
{x: 1}, {partialFilterExpression: {$expr: {$eq: [{$trim: {input: "$x"}}, "hi"]}}}));
// Only top-level $and is permitted in a partial filter expression.
assert.commandFailedWithCode(coll.createIndex({x: 1}, {
partialFilterExpression: {$and: [{$and: [{x: {$lt: 2}}, {x: {$gt: 0}}]}, {x: {$exists: true}}]}
}),
ErrorCodes.CannotCreateIndex);
for (var i = 0; i < 10; i++) {
assert.commandWorked(coll.insert({x: i, a: i}));
}
// Create partial index.
assert.commandWorked(coll.createIndex({x: 1}, {partialFilterExpression: {a: {$lt: 5}}}));
assert.eq(5, getNumKeys("x_1"));
assert.commandWorked(coll.dropIndex({x: 1}));
assert.eq(1, coll.getIndexes().length);
// Create partial index in background.
assert.commandWorked(
coll.createIndex({x: 1}, {background: true, partialFilterExpression: {a: {$lt: 5}}}));
assert.eq(5, getNumKeys("x_1"));
assert.commandWorked(coll.dropIndex({x: 1}));
assert.eq(1, coll.getIndexes().length);
// Create complete index, same key as previous indexes.
assert.commandWorked(coll.createIndex({x: 1}));
assert.eq(10, getNumKeys("x_1"));
assert.commandWorked(coll.dropIndex({x: 1}));
assert.eq(1, coll.getIndexes().length);
// Partial indexes can't also be sparse indexes.
assert.commandFailed(coll.createIndex({x: 1}, {partialFilterExpression: {a: 1}, sparse: true}));
assert.commandFailed(coll.createIndex({x: 1}, {partialFilterExpression: {a: 1}, sparse: 1}));
assert.commandWorked(coll.createIndex({x: 1}, {partialFilterExpression: {a: 1}, sparse: false}));
assert.eq(2, coll.getIndexes().length);
assert.commandWorked(coll.dropIndex({x: 1}));
assert.eq(1, coll.getIndexes().length);
// SERVER-18858: Verify that query compatible w/ partial index succeeds after index drop.
assert.commandWorked(coll.createIndex({x: 1}, {partialFilterExpression: {a: {$lt: 5}}}));
assert.commandWorked(coll.dropIndex({x: 1}));
assert.eq(1, coll.find({x: 0, a: 0}).itcount());
// Can create multiple partial indexes on the same key pattern as long as the filter is different.
assert.commandWorked(coll.dropIndexes());
let numIndexesBefore = coll.getIndexes().length;
assert.commandWorked(
coll.createIndex({x: 1}, {name: "partialIndex1", partialFilterExpression: {a: {$lt: 5}}}));
assert.eq(coll.getIndexes().length, numIndexesBefore + 1);
numIndexesBefore = coll.getIndexes().length;
assert.commandWorked(
coll.createIndex({x: 1}, {name: "partialIndex2", partialFilterExpression: {a: {$gte: 5}}}));
assert.eq(coll.getIndexes().length, numIndexesBefore + 1);
numIndexesBefore = coll.getIndexes().length;
assert.commandFailedWithCode(coll.dropIndex({x: 1}), ErrorCodes.AmbiguousIndexKeyPattern);
assert.commandWorked(coll.dropIndex("partialIndex2"));
assert.eq(coll.getIndexes().length, numIndexesBefore - 1);
})();
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