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/**
* Tests upgrading a cluster to config version 4 with epochs and ensures 2.2 mongod will write the
* correct epochs on the next move/split.
*/
load( './jstests/multiVersion/libs/multi_rs.js' )
load( './jstests/multiVersion/libs/multi_cluster.js' )
jsTest.log( "Starting 2.0 cluster..." );
var options = {
mongosOptions : { binVersion : "2.0" },
configOptions : { binVersion : "2.0" },
shardOptions : { binVersion : "2.0" },
separateConfig : true,
sync : false
}
var st = new ShardingTest({ shards : 3, mongos : 2, other : options });
// Stop balancer, otherwise the balancer lock can get wedged for 15 mins after our upgrades
// on bad mongos shutdowns.
st.stopBalancer();
var shards = st.s0.getDB("config").shards.find().toArray();
var configConnStr = st._configDB;
//
// Add sharded collection in 2.0 cluster
//
jsTest.log("Creating new collection in 2.0 cluster...");
var mongos20 = st.s0;
var coll = mongos20.getCollection("foo.bar");
var admin = mongos20.getDB("admin");
printjson(admin.runCommand({ enableSharding : coll.getDB() + "" }));
printjson(admin.runCommand({ movePrimary : coll.getDB() + "", to : shards[0]._id }));
printjson(admin.runCommand({ shardCollection : coll + "", key : { _id : 1 } }));
st.printShardingStatus();
//
// Upgrade 2.0 cluster to 2.0/2.2
//
jsTest.log("Upgrading 2.0 cluster to 2.2 cluster...");
st.upgradeCluster("2.2");
// Restart of mongos here is unfortunately necessary, connection pooling otherwise causes problems
st.restartMongoses();
var mongos22A = st.s0;
var mongos22B = st.s1;
jsTest.log("Performing metadata operations without epochs...");
var coll = mongos22A.getCollection("foo.bar");
var admin = mongos22A.getDB("admin");
var config = mongos22A.getDB("config");
//Split collection into several parts
printjson(admin.runCommand({ split : coll + "", middle : { _id : 0 } }));
printjson(admin.runCommand({ split : coll + "", middle : { _id : 1 } }));
printjson(admin.runCommand({ split : coll + "", middle : { _id : 2 } }));
//Put one part on each shard
printjson(admin.runCommand({ moveChunk : coll + "", find : { _id : 1 }, to : shards[1]._id }));
printjson(admin.runCommand({ moveChunk : coll + "", find : { _id : 2 }, to : shards[2]._id }));
//Split the first chunk into two parts, so all shards will have chunks after one migrate
printjson(admin.runCommand({ split : coll + "", middle : { _id : 0.5 } }));
// Make sure mongos22B is up-to-date with the correct version
mongos22B.getCollection("foo.bar").findOne();
printjson(config.chunks.find().toArray());
//
// Upgrade cluster to new version
//
jsTest.log("Starting v2.4 mongos in 2.2 cluster....")
var mongos = MongoRunner.runMongos({ binVersion : "2.4", configdb : configConnStr, upgrade : "" })
assert.neq(null, mongos);
MongoRunner.stopMongos(mongos);
jsTest.log("2.4 mongos upgraded cluster.")
//
// Do more metadata operations with 2.2 mongoses without updating versions
//
jsTest.log("Doing more metadata operations with un-refreshed 2.2 mongoses and ds");
// Do a move operation
printjson(mongos22A.getDB("admin").runCommand({ moveChunk : coll + "",
find : { _id : 0 }, to : shards[1]._id }));
// Do a split operation
printjson(mongos22B.getDB("admin").runCommand({ split : coll + "",
middle : { _id : 3 } }));
printjson(config.chunks.find().toArray());
//
// Check that this didn't screw up our upgrade
//
jsTest.log("Was upgraded?")
var checkUpgraded = function() {
//
// Verify that all collections have correct epochs in new cluster
//
var collections = config.collections.find().toArray();
var chunks = config.chunks.find().toArray();
for (var i = 0; i < collections.length; i++) {
var collection = collections[i];
if (collection.dropped) continue;
var epoch = collection.lastmodEpoch
assert(epoch);
for (var j = 0; j < chunks.length; j++) {
var chunk = chunks[j];
if (chunk.ns != collection._id) continue;
assert.eq(chunk.lastmodEpoch, epoch);
}
}
//
// Verify cluster version is correct
//
var version = config.getMongo().getCollection("config.version").findOne();
printjson(version)
assert.eq(version.version, 3);
assert.eq(version.minCompatibleVersion, 3);
assert.eq(version.currentVersion, 4);
assert(version.clusterId);
assert.eq(version.excluding, undefined);
}
checkUpgraded();
jsTest.log("DONE!")
st.stop();
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