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/**
* Tests that buckets which need to be closed due to size (timeseriesBucketMaxSize) are kept open
* until the number of measurements reaches the threshold (timeseriesBucketMinCount).
*
* @tags: [
* requires_collstats,
* requires_fcv_61,
* ]
*/
(function() {
"use strict";
load("jstests/core/timeseries/libs/timeseries.js"); // For 'TimeseriesTest'.
const conn = MongoRunner.runMongod();
const dbName = jsTestName();
const db = conn.getDB(dbName);
assert.commandWorked(db.dropDatabase());
const coll = db.getCollection(jsTestName());
const timeFieldName = "localTime";
const metaFieldName = "host";
const resetCollection = (() => {
coll.drop();
assert.commandWorked(db.createCollection(
jsTestName(), {timeseries: {timeField: timeFieldName, metaField: metaFieldName}}));
});
const areTimeseriesScalabilityImprovementsEnabled =
TimeseriesTest.timeseriesScalabilityImprovementsEnabled(db);
const numMeasurements = 50;
let expectedNumBucketsKeptOpenDueToLargeMeasurements = 0;
const checkBucketSize = (() => {
const timeseriesStats = assert.commandWorked(coll.stats()).timeseries;
if (areTimeseriesScalabilityImprovementsEnabled) {
// Need at least 10 measurements before closing buckets exceeding timeseriesBucketMaxSize.
assert.eq(numMeasurements / 10, timeseriesStats.bucketCount);
assert(timeseriesStats.hasOwnProperty("numBucketsKeptOpenDueToLargeMeasurements"));
expectedNumBucketsKeptOpenDueToLargeMeasurements += numMeasurements / 10;
assert.eq(expectedNumBucketsKeptOpenDueToLargeMeasurements,
timeseriesStats.numBucketsKeptOpenDueToLargeMeasurements);
} else {
// After accounting for the control.min and control.max summaries, one measurement of server
// status exceeds the bucket max size. Which means we'll only have one measurement per
// bucket.
assert.eq(numMeasurements, timeseriesStats.bucketCount);
assert(!timeseriesStats.hasOwnProperty("numBucketsKeptOpenDueToLargeMeasurements"));
}
});
jsTestLog("Testing single inserts");
resetCollection();
for (let i = 0; i < numMeasurements; i++) {
const doc = assert.commandWorked(db.runCommand({serverStatus: 1}));
assert.commandWorked(coll.insert(doc));
}
checkBucketSize();
jsTestLog("Testing batched inserts");
resetCollection();
let batch = [];
for (let i = 0; i < numMeasurements; i++) {
const doc = assert.commandWorked(db.runCommand({serverStatus: 1}));
batch.push(doc);
}
assert.commandWorked(coll.insertMany(batch, {ordered: false}));
checkBucketSize();
MongoRunner.stopMongod(conn);
}());
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