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84 lines
2.8 KiB
JavaScript
84 lines
2.8 KiB
JavaScript
// test that a rollback of an entry that matches the ts but not h causes no problems
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// function to check the logs for an entry
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doesEntryMatch = function(array, regex) {
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var found = false;
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for (i = 0; i < array.length; i++) {
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if (regex.test(array[i])) {
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found = true;
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}
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}
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return found;
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}
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// set up a set and grab things for later
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var name = "rollback_different_h";
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var replTest = new ReplSetTest({name: name, nodes: 3});
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var nodes = replTest.nodeList();
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var conns = replTest.startSet();
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replTest.initiate({"_id": name,
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"members": [
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{ "_id": 0, "host": nodes[0], priority: 3 },
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{ "_id": 1, "host": nodes[1] },
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{ "_id": 2, "host": nodes[2], arbiterOnly: true}]
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});
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var a_conn = conns[0];
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var b_conn = conns[1];
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var AID = replTest.getNodeId(a_conn);
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var BID = replTest.getNodeId(b_conn);
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replTest.waitForState(replTest.nodes[0], replTest.PRIMARY, 60 * 1000);
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// get master and do an initial write
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var master = replTest.getMaster();
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assert(master === conns[0], "conns[0] assumed to be master");
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assert(a_conn.host === master.host, "a_conn assumed to be master");
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var options = {writeConcern: {w: 2, wtimeout: 60000}, upsert: true};
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assert.writeOK(a_conn.getDB(name).foo.insert({x: 1}, options));
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// shut down master
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replTest.stop(AID);
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// change the h value of the most recent entry on B
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master = replTest.getMaster();
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assert(b_conn.host === master.host, "b_conn assumed to be master");
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options = {writeConcern: {w: 1, wtimeout: 60000}, upsert: true};
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var oplog_entry = b_conn.getDB("local").oplog.rs.find().sort({$natural: -1})[0];
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oplog_entry["ts"].t++;
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oplog_entry["h"] = NumberLong(1);
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res = b_conn.getDB("local").oplog.rs.insert(oplog_entry);
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assert( res.nInserted > 0, tojson( res ) );
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// another insert to set minvalid ahead
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assert.writeOK(b_conn.getDB(name).foo.insert({x: 123}));
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// shut down B and bring back the original master
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replTest.stop(BID);
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replTest.restart(AID);
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master = replTest.getMaster();
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assert(a_conn.host === master.host, "a_conn assumed to be master");
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// do a write so that B will have to roll back
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options = {writeConcern: {w: 1, wtimeout: 60000}, upsert: true};
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assert.writeOK(a_conn.getDB(name).foo.insert({x: 2}, options));
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// restart B, which should rollback and get to the same state as A
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replTest.restart(BID);
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assert.soon(function() {
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try {
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var logb = b_conn.getDB("local").oplog.rs.find().toArray();
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var loga = a_conn.getDB("local").oplog.rs.find().toArray();
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for (var i = 0; i < loga.length; i++) {
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if (tojson(loga[i]) !== tojson(logb[i])) {
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return false;
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}
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}
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return true;
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}
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catch (e) {
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return false;
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}
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}, "oplogs from A and B did not match after rollback");
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replTest.stopSet();
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