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/**
* Fills WiredTiger cache during steady state oplog application.
* @tags: [
* requires_replication,
* requires_wiredtiger,
* ]
*/
(function() {
'use strict';
const rst = new ReplSetTest({
nodes: [
{
slowms: 30000, // Don't log slow operations on primary.
},
{
// Disallow elections on secondary.
rsConfig: {
priority: 0,
votes: 0,
},
// Constrain the storage engine cache size to make it easier to fill it up with
// unflushed modifications.
wiredTigerCacheSizeGB: 1,
},
]
});
const nodes = rst.startSet();
rst.initiate();
const primary = rst.getPrimary();
const mydb = primary.getDB('test');
const coll = mydb.getCollection('t');
// The default WC is majority and rsSyncApplyStop failpoint will prevent satisfying any majority
// writes.
assert.commandWorked(primary.adminCommand(
{setDefaultRWConcern: 1, defaultWriteConcern: {w: 1}, writeConcern: {w: "majority"}}));
const numDocs = 2;
const minDocSizeMB = 10;
for (let i = 0; i < numDocs; ++i) {
assert.commandWorked(
coll.save({_id: i, i: 0, x: 'x'.repeat(minDocSizeMB * 1024 * 1024)},
{writeConcern: {w: nodes.length, wtimeout: ReplSetTest.kDefaultTimeoutMS}}));
}
assert.eq(numDocs, coll.find().itcount());
const numUpdates = 500;
const secondary = rst.getSecondary();
const batchOpsLimit =
assert.commandWorked(secondary.adminCommand({getParameter: 1, replBatchLimitOperations: 1}))
.replBatchLimitOperations;
jsTestLog('Oplog application on secondary ' + secondary.host + ' is limited to ' + batchOpsLimit +
' operations per batch.');
jsTestLog('Buffering ' + numUpdates + ' updates to ' + numDocs + ' documents on secondary.');
assert.commandWorked(
secondary.adminCommand({configureFailPoint: 'rsSyncApplyStop', mode: 'alwaysOn'}));
for (let i = 0; i < numDocs; ++i) {
for (let j = 0; j < numUpdates; ++j) {
assert.commandWorked(coll.update({_id: i}, {$inc: {i: 1}}));
}
}
jsTestLog('Applying updates on secondary ' + secondary.host);
assert.commandWorked(secondary.adminCommand({configureFailPoint: 'rsSyncApplyStop', mode: 'off'}));
rst.awaitReplication();
rst.stopSet();
})();
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