jstests/slowWeekly/rollback4.js


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// Test a large rollback SERVER-2737

var replTest = new ReplSetTest({ name: 'unicomplex', nodes: 3, oplogSize: 2000 });
var nodes = replTest.nodeList();

var conns = replTest.startSet();
var r = replTest.initiate({ "_id": "unicomplex",
                          "members": [
                                      { "_id": 0, "host": nodes[0] },
                                      { "_id": 1, "host": nodes[1] },
                                      { "_id": 2, "host": nodes[2], arbiterOnly: true}]
                          });

// Make sure we have a master
var master = replTest.getMaster();
b_conn = conns[1];
b_conn.setSlaveOk();
B = b_conn.getDB("admin");

// Make sure we have an arbiter
assert.soon(function () {
            res = conns[2].getDB("admin").runCommand({ replSetGetStatus: 1 });
            return res.myState == 7;
            }, "Arbiter failed to initialize.");

// Wait for initial replication
replTest.awaitReplication();

// Insert into master
var big = { b:new Array( 1000 ).toString() };
for( var i = 0; i < 1000000; ++i ) {
    if ( i % 10000 == 0 ) {
        print( i );
    }
	master.getDB( 'db' ).c.insert( big );
}

// Stop master
replTest.stop( 0 );

// Wait for slave to take over
assert.soon(function () { return B.isMaster().ismaster; });
master = replTest.getMaster();

// Save to new master, forcing rollback of old master
master.getDB( 'db' ).c.save( big );

// Restart old master
replTest.restart( 0 );
replTest.awaitReplication();