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/**
* Verify the behavior of TTL batched deletes and ttlMonitorBatchDeletes parameter.
*
* @tags: [
* requires_replication,
* requires_sharding,
* requires_timeseries,
* uses_ttl,
* ]
*/
(function() {
'use strict';
load("jstests/libs/clustered_collections/clustered_collection_util.js");
load('jstests/replsets/rslib.js');
load("jstests/libs/fixture_helpers.js"); // For mapOnEachShardNode().
const docCount = 50;
const runTestCase = function(fn, isSharded = false) {
if (!isSharded) {
const replTest = new ReplSetTest({
nodes: 1,
nodeOptions: {setParameter: {ttlMonitorSleepSecs: 1}},
});
replTest.startSet();
replTest.initiate();
fn(replTest.getPrimary());
replTest.stopSet();
} else {
const st = new ShardingTest({
shards: 1,
mongos: 1,
config: 1,
other: {
shardOptions: {setParameter: {ttlMonitorSleepSecs: 1}},
}
});
const conn = st.s0;
fn(conn);
st.stop();
}
};
const disableTTLBatchDeletes = function(conn) {
// Disable TTL batch deletion.
assert.commandWorked(
conn.getDB('admin').runCommand({setParameter: 1, ttlMonitorBatchDeletes: false}));
};
const triggerIndexScanTTL = function(db, doShardCollection = false) {
const coll = db.ttl_coll;
coll.drop();
if (doShardCollection) {
assert.commandWorked(db.adminCommand({enableSharding: db.getName()}));
assert.commandWorked(
db.adminCommand({shardCollection: coll.getFullName(), key: {_id: 'hashed'}}));
}
// Insert 50 docs with timestamp 'now - 24h'.
const now = (new Date()).getTime();
const past = new Date(now - (3600 * 1000 * 24));
for (let i = 0; i < docCount; i++) {
assert.commandWorked(db.runCommand({insert: 'ttl_coll', documents: [{x: past}]}));
}
assert.eq(coll.find().itcount(), docCount);
// Create TTL index: expire docs older than 20000 seconds (~5.5h).
coll.createIndex({x: 1}, {expireAfterSeconds: 20000});
assert.soon(function() {
return coll.find().itcount() == 0;
}, 'TTL index on x didn\'t delete');
};
const testTTLDeleteWithIndexScanBatched = function(conn) {
const db = conn.getDB('test');
triggerIndexScanTTL(db);
// Verify batchedDeletes status to verify ttl deletions have been batched.
assert.eq(db.serverStatus()["batchedDeletes"]["docs"], docCount);
};
const testTTLDeleteWithIndexScanDocByDoc = function(conn) {
const db = conn.getDB('test');
disableTTLBatchDeletes(conn);
triggerIndexScanTTL(db);
// Verify batchedDeletes status to verify ttl deletions batch doc count is 0.
assert.eq(db.serverStatus()["batchedDeletes"]["docs"], 0);
};
const triggerCollectionScanTTL = function(testDB, doShardCollection = false) {
const timeFieldName = 'time';
const metaFieldName = 'host';
const expireAfterSeconds = 5;
// Default maximum range of time for a bucket.
const defaultBucketMaxRange = 3600;
const coll = testDB.getCollection('ts');
const bucketsColl = testDB.getCollection('system.buckets.' + coll.getName());
assert.commandWorked(testDB.createCollection(coll.getName(), {
timeseries: {
timeField: timeFieldName,
metaField: metaFieldName,
},
expireAfterSeconds: expireAfterSeconds,
}));
if (doShardCollection) {
assert.commandWorked(
testDB.adminCommand({shardCollection: coll.getFullName(), key: {[metaFieldName]: 1}}));
}
const maxTime = new Date((new Date()).getTime() - (1000 * defaultBucketMaxRange));
const minTime = new Date(maxTime.getTime() - (1000 * 5 * 60));
for (let i = 0; i < docCount; i++) {
const time = new Date(minTime.getTime() + i);
assert.commandWorked(coll.insert({[timeFieldName]: time, [metaFieldName]: "localhost"}));
}
assert.soon(function() {
return coll.find().itcount() == 0;
}, 'TTL index on the cluster key didn\'t delete');
assert.eq(0, coll.find().itcount());
assert.eq(0, bucketsColl.find().itcount());
};
const testTTLDeleteWithCollectionScanBatched = function(conn) {
const testDB = conn.getDB('test');
triggerCollectionScanTTL(testDB);
// For time series the "docs" count is related to buckets instead of documents. Check that the
// number of batches is greater than 0 instead.
assert.gt(testDB.serverStatus()["batchedDeletes"]["batches"], 0);
};
const testTTLDeleteWithCollectionScanDocByDoc = function(conn) {
const testDB = conn.getDB('test');
disableTTLBatchDeletes(conn);
triggerCollectionScanTTL(testDB);
assert.eq(testDB.serverStatus()["batchedDeletes"]["batches"], 0);
};
const verifyTTLOnShardedCluster = function(conn, clustered = false) {
const db = conn.getDB('test');
if (clustered) {
triggerCollectionScanTTL(db, true /* doShardCollection */);
} else {
triggerIndexScanTTL(db, true /* doShardCollection */);
}
// Verify batchedDeletes status to verify ttl deletions have been batched.
var sum = 0;
FixtureHelpers.mapOnEachShardNode({
db: db,
func: (db) => {
sum += db.serverStatus()["batchedDeletes"]["docs"];
}
});
if (clustered) {
// For time series the "docs" count is related to buckets instead of documents. Check that
// the number of batches is greater than 0 instead.
assert.gte(sum, 0);
} else {
assert.eq(sum, docCount);
}
};
const testTTLDeleteWithIndexScanBatchedOnShardedCollection = function(conn) {
verifyTTLOnShardedCluster(conn, false);
};
const testTTLDeleteWithCollectionScanBatchedOnShardedCollection = function(conn) {
verifyTTLOnShardedCluster(conn, true);
};
runTestCase(testTTLDeleteWithIndexScanBatched);
runTestCase(testTTLDeleteWithIndexScanDocByDoc);
runTestCase(testTTLDeleteWithCollectionScanBatched);
runTestCase(testTTLDeleteWithCollectionScanDocByDoc);
runTestCase(testTTLDeleteWithIndexScanBatchedOnShardedCollection, true);
runTestCase(testTTLDeleteWithCollectionScanBatchedOnShardedCollection, true);
})();
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