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72 lines
2.1 KiB
JavaScript
72 lines
2.1 KiB
JavaScript
/**
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* This checks rollback, which shouldn't happen unless we have reached minvalid.
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* 1. make 3-member set w/arb (2)
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* 2. shut down slave
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* 3. do writes to master
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* 4. modify master's minvalid
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* 5. shut down master
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* 6. start up slave
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* 7. writes on former slave (now primary)
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* 8. start up master
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* 9. check master does not rollback
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*/
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print("1. make 3-member set w/arb (2)");
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var name = "minvalid"
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var replTest = new ReplSetTest({name: name, nodes: 3, oplogSize:1});
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var host = getHostName();
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var nodes = replTest.startSet();
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replTest.initiate({_id : name, members : [
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{_id : 0, host : host+":"+replTest.ports[0]},
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{_id : 1, host : host+":"+replTest.ports[1]},
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{_id : 2, host : host+":"+replTest.ports[2], arbiterOnly : true}
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]});
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var slaves = replTest.liveNodes.slaves;
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var master = replTest.getMaster();
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var masterId = replTest.getNodeId(master);
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var slave = slaves[0];
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var slaveId = replTest.getNodeId(slave);
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var mdb = master.getDB("foo");
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mdb.foo.save({a: 1000});
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replTest.awaitReplication();
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print("2: shut down slave");
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replTest.stop(slaveId);
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print("3: write to master");
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assert.writeOK(mdb.foo.insert({a: 1001}, { writeConcern: { w: 1 } }));
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print("4: modify master's minvalid");
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var local = master.getDB("local");
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var lastOp = local.oplog.rs.find().sort({$natural:-1}).limit(1).next();
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printjson(lastOp);
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// Overwrite minvalid document to simulate an inconsistent state (as might result from a server
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// crash.
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local.replset.minvalid.update({},{ ts:new Timestamp(lastOp.ts.t, lastOp.ts.i+1) }, {upsert: true});
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printjson(local.replset.minvalid.findOne());
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print("5: shut down master");
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replTest.stop(masterId);
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print("6: start up slave");
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replTest.restart(slaveId);
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print("7: writes on former slave")
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master = replTest.getMaster();
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mdb1 = master.getDB("foo");
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mdb1.foo.save({a:1002});
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print("8: start up former master");
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clearRawMongoProgramOutput();
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replTest.restart(masterId);
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print("9: check former master does not roll back");
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assert.soon(function(){
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return rawMongoProgramOutput().match("need to rollback, but in inconsistent state");
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});
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replTest.stopSet(15);
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