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/*
* Test that $group and $setWindowFields spill to the WT RecordStore on secondaries with
* writeConcern greater than w:1.
* @tags: [requires_replication, requires_majority_read_concern]
*/
(function() {
"use strict";
const replTest = new ReplSetTest({
nodes: 3,
});
replTest.startSet();
replTest.initiate();
// Test that spilling '$group' pipeline on a secondary works with a writeConcern greater than w:1.
let primary = replTest.getPrimary();
const insertColl = primary.getDB("test").foo;
for (let i = 0; i < 500; ++i) {
assert.commandWorked(insertColl.insert({a: i, string: "test test test"}));
}
let secondary = replTest.getSecondary();
assert.commandWorked(secondary.adminCommand(
{setParameter: 1, internalQuerySlotBasedExecutionHashAggApproxMemoryUseInBytesBeforeSpill: 1}));
const readColl = secondary.getDB("test").foo;
let pipeline = [{$group: {_id: '$a', s: {$addToSet: '$string'}, p: {$push: '$a'}}}];
let res =
readColl
.aggregate(
pipeline,
{allowDiskUse: true, readConcern: {level: "majority"}, writeConcern: {"w": "majority"}})
.toArray();
insertColl.drop();
// Test that spilling '$setWindowFields' pipeline on a secondary works with a writeConcern greater
// than w:1.
let avgDocSize = 274;
let smallPartitionSize = 6;
let largePartitionSize = 21;
const insertCollWFs = primary.getDB("test").bar;
// Create small partition.
for (let i = 0; i < smallPartitionSize; i++) {
assert.commandWorked(insertCollWFs.insert({_id: i, val: i, partition: 1}));
}
// Create large partition.
for (let i = 0; i < largePartitionSize; i++) {
assert.commandWorked(insertCollWFs.insert({_id: i + smallPartitionSize, val: i, partition: 2}));
}
assert.commandWorked(secondary.adminCommand({
setParameter: 1,
internalDocumentSourceSetWindowFieldsMaxMemoryBytes: largePartitionSize * avgDocSize + 1
}));
const readCollWFs = secondary.getDB("test").bar;
pipeline = [
{
$setWindowFields: {
partitionBy: "$partition",
sortBy: {partition: 1},
output: {arr: {$push: "$val", window: {documents: [-25, 25]}}}
}
},
{$sort: {_id: 1}}
];
res =
readCollWFs
.aggregate(
pipeline,
{allowDiskUse: true, readConcern: {level: "majority"}, writeConcern: {"w": "majority"}})
.toArray();
replTest.stopSet();
})();
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