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/**
* Starts a replica set with arbiter, builds an index in background.
* Kills the secondary once the index build starts with a failpoint.
* The index build should resume when the secondary is restarted.
*/
// @tags: [requires_persistence, requires_journaling, requires_replication]
(function() {
'use strict';
// Set up replica set
var replTest = new ReplSetTest({name: 'bgIndex', nodes: 3});
var nodes = replTest.nodeList();
// We need an arbiter to ensure that the primary doesn't step down
// when we restart the secondary.
replTest.startSet();
replTest.initiate({
"_id": "bgIndex",
"members": [
{"_id": 0, "host": nodes[0]},
{"_id": 1, "host": nodes[1]},
{"_id": 2, "host": nodes[2], "arbiterOnly": true}
]
});
var master = replTest.getPrimary();
var second = replTest.getSecondary();
var masterDB = master.getDB('bgIndexSec');
var secondDB = second.getDB('bgIndexSec');
var collectionName = 'jstests_bgsec';
var coll = masterDB.getCollection(collectionName);
var size = 100;
var bulk = masterDB.jstests_bgsec.initializeUnorderedBulkOp();
for (var i = 0; i < size; ++i) {
bulk.insert({i: i});
}
assert.writeOK(bulk.execute({j: true}));
assert.eq(size, coll.count(), 'unexpected number of documents after bulk insert.');
// Make sure the documents make it to the secondary.
replTest.awaitReplication();
assert.commandWorked(secondDB.adminCommand(
{configureFailPoint: 'leaveIndexBuildUnfinishedForShutdown', mode: 'alwaysOn'}));
try {
coll.createIndex({i: 1}, {background: true});
masterDB.getLastError(2);
assert.eq(2, coll.getIndexes().length);
// Make sure all writes are durable on the secondary so that we can restart it knowing that
// the index build will be found on startup.
// Waiting for durable is important for both (A) the record that we started the index build
// so it is rebuild on restart, and (B) the update to minvalid to show that we've already
// applied the oplog entry so it isn't replayed. If (A) is present without (B), then there
// are two ways that the index can be rebuilt on startup and this test is only for the one
// triggered by (A).
secondDB.adminCommand({fsync: 1});
} finally {
assert.commandWorked(secondDB.adminCommand(
{configureFailPoint: 'leaveIndexBuildUnfinishedForShutdown', mode: 'off'}));
}
MongoRunner.stopMongod(second);
replTest.start(second, {}, /*restart=*/true, /*wait=*/true);
// Make sure secondary comes back.
assert.soon(function() {
try {
secondDB.isMaster(); // trigger a reconnect if needed
return true;
} catch (e) {
return false;
}
}, "secondary didn't restart", 30000, 1000);
assert.soon(function() {
return 2 == secondDB.getCollection(collectionName).getIndexes().length;
}, "Index build not resumed after restart", 30000, 50);
replTest.stopSet();
}());
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