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/**
* Test for SERVER-17487
* 3 node replset
* insert docs with numeric _ids
* start deleting/re-inserting docs from collection in a loop
* add new secondary to force initialSync
* verify collection and both indexes on the secondary have the right number of docs
*/
(function() {
'use strict';
load('jstests/libs/parallelTester.js');
var awaitTimeout = 2*60*1000;
// used to parse RAM log file
var contains = function(logLines, func) {
var i = logLines.length;
while (i--) {
printjson(logLines[i]);
if (func(logLines[i])) {
return true;
}
}
return false;
}
var replTest = new ReplSetTest({name: 'cloner', nodes: 3, oplogSize: 150 /*~1.5x data size*/});
replTest.startSet();
var conf = replTest.getReplSetConfig();
conf.settings = {};
conf.settings.chainingAllowed = false;
replTest.initiate(conf);
replTest.awaitSecondaryNodes(awaitTimeout);
var primary = replTest.getPrimary();
var coll = primary.getDB('test').cloner;
coll.drop();
coll.createIndex({k: 1});
// These need to be big enough to force initial-sync to use many batches
var numDocs = 100*1000;
var bigStr = Array(1001).toString();
var batch = coll.initializeUnorderedBulkOp();
for (var i=0; i < numDocs; i++) {
batch.insert({_id: i, bigStr: bigStr});
}
batch.execute();
replTest.awaitReplication(awaitTimeout);
jsTestLog("Start remove/insert on primary");
var insertAndRemove = function(host) {
jsTestLog("starting bg writes on " + host);
var m = new Mongo(host);
var db = m.getDB('test');
var coll = db.cloner;
var numDocs = coll.count();
for (var i=0; !db.stop.findOne(); i++) {
var id = Random.randInt(numDocs);
coll.remove({_id: id});
coll.insert({_id: id});
var id = i % numDocs;
//print(id);
coll.remove({_id: id});
coll.insert({_id: id});
// Try to throttle this thread to prevent overloading slow machines.
sleep(1);
}
jsTestLog("finished bg writes on " + host);
}
var worker = new ScopedThread(insertAndRemove, primary.host);
worker.start();
jsTestLog("add a new secondary");
var secondary = replTest.add({});
replTest.reInitiate(awaitTimeout * 2);
secondary.setSlaveOk();
// Wait for the secondary to get ReplSetInitiate command.
replTest.waitForState(secondary,
[replTest.STARTUP2, replTest.RECOVERING, replTest.SECONDARY],
60 * 1000);
// This fail point will cause the first intial sync to fail, and leave an op in the buffer to
// verify the fix from SERVER-17807
print("=================== failpoint enabled ==============");
printjson(assert.commandWorked(secondary.getDB("admin").adminCommand(
{ configureFailPoint: 'failInitSyncWithBufferedEntriesLeft',
mode: {times: 1}} )));
printjson(assert.commandWorked(secondary.getDB("admin").adminCommand( { resync:true } )));
// NOTE: This is here to prevent false negatives, but it is racy and dependent on magic numbers.
// Removed the assertion because it was too flaky. Printing a warning instead (dan)
jsTestLog("making sure we dropped some dups");
var res = secondary.adminCommand({getLog:"global"});
var droppedDups = (contains(res.log, function(v) {
return v.indexOf("index build dropped"/* NNN dups*/) != -1;
}));
if (!droppedDups) {
jsTestLog("Warning: Test did not trigger duplicate documents, this run will be a false negative");
}
jsTestLog("stopping writes and waiting for replica set to coalesce")
primary.getDB('test').stop.insert({});
worker.join();
//make sure all secondaries are caught up, after init sync
reconnect(secondary.getDB("test"));
replTest.awaitSecondaryNodes(awaitTimeout);
replTest.awaitReplication(awaitTimeout);
jsTestLog("check that secondary has correct counts");
var secondaryColl = secondary.getDB('test').getCollection('cloner');
var index = secondaryColl.find({},{_id:1}).hint({_id:1}).itcount();
var secondary_index = secondaryColl.find({},{_id:1}).hint({k:1}).itcount();
var table = secondaryColl.find({},{_id:1}).hint({$natural:1}).itcount();
if (index != table || index != secondary_index) {
printjson({name: coll,
_id_index_count:index,
secondary_index_count: secondary_index,
table_count: table});
}
assert.eq(index, table) ;
assert.eq(table, secondary_index);
})();
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