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// This tests that:
// * stale members get into state 3 (recovering)
// * they stay in state 3 after restarting
// * they can recover and go into state 2 if someone less up-to-date becomes primary
//
// This test requires persistence in order for a restarted node with a stale oplog to stay in the
// RECOVERING state. A restarted node with an ephemeral storage engine will not have an oplog upon
// restart, so will immediately resync.
// @tags: [requires_persistence]
/**
* 1: initial insert
* 2: initial sync
* 3: blind s2
* 4: overflow oplog
* 5: unblind s2
* 6: check s2.state == 3
* 7: restart s2
* 8: check s2.state == 3
*/
var w = 0;
var wait = function(f) {
w++;
var n = 0;
while (!f()) {
if( n % 4 == 0 )
print("toostale.js waiting " + w);
if (++n == 4) {
print("" + f);
}
assert(n < 200, 'tried 200 times, giving up');
sleep(1000);
}
}
var reconnect = function(a) {
wait(function() {
try {
a.bar.stats();
return true;
} catch(e) {
print(e);
return false;
}
});
};
var name = "toostale"
var replTest = new ReplSetTest({ name: name, nodes: 3, oplogSize: 5 });
var host = getHostName();
var nodes = replTest.startSet();
replTest.initiate({_id : name, members : [
{_id : 0, host : host+":"+replTest.ports[0], priority: 2},
{_id : 1, host : host+":"+replTest.ports[1], arbiterOnly : true},
{_id : 2, host : host+":"+replTest.ports[2], priority: 0}
]});
var master = replTest.getPrimary();
var mdb = master.getDB("foo");
print("1: initial insert");
mdb.foo.save({a: 1000});
print("2: initial sync");
replTest.awaitReplication();
print("3: stop s2");
replTest.stop(2);
print("waiting until the master knows the slave is blind");
assert.soon(function() { return master.getDB("admin").runCommand({replSetGetStatus:1}).members[2].health == 0 });
print("okay");
print("4: overflow oplog");
reconnect(master.getDB("local"));
var count = master.getDB("local").oplog.rs.count();
var prevCount = -1;
while (count > prevCount) {
print("inserting 1000");
var bulk = mdb.bar.initializeUnorderedBulkOp();
for (var i = 0; i < 1000; i++) {
bulk.insert({ x: i, date: new Date(), str: "safkaldmfaksndfkjansfdjanfjkafa" });
}
assert.writeOK(bulk.execute());
prevCount = count;
replTest.awaitReplication();
count = master.getDB("local").oplog.rs.count();
print("count: "+count+" prev: "+prevCount);
}
print("5: restart s2");
replTest.restart(2);
print("waiting until the master knows the slave is not blind");
assert.soon(function() { return master.getDB("admin").runCommand({replSetGetStatus:1}).members[2].health != 0 });
print("okay");
print("6: check s2.state == 3");
var goStale = function() {
wait(function() {
var status = master.getDB("admin").runCommand({replSetGetStatus:1});
printjson(status);
return status.members[2].state == 3;
});
};
goStale();
print("7: restart s2");
replTest.stop(2);
replTest.restart(2);
print("8: check s2.state == 3");
assert.soon(function() {
var status = master.getDB("admin").runCommand({replSetGetStatus:1});
printjson(status);
return status.members && status.members[2].state == 3;
});
replTest.stop(0);
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