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// SERVER-16498 d_migrate.cpp should not rely on system.namespaces
//
// This test creates a sharded collection with wiredtiger options.
// When the chunks of this collection get migrated to the other shard,
// the other shard should create the collection with the same options.
// However, before SERVER-16498, the receiver relies on checking
// system.namespaces on the donor, which is empty on wiredtiger.
// As a result, the new collection created on receiver has different
// options.
//
// P.S. wiredtiger options are not valid for MMAPv1, but MMAPv1 will
// keep and ignore them.
var st = new ShardingTest({ shards : 2 });
var db = st.s.getDB("test");
var coll = db.sharding_system_namespaces;
// This test relies on the wiredTiger storage engine being compiled
// into the server. Must check shard member for WT as it is not built into mongos.
var storageEngines = st.shard0.getDB("local").serverBuildInfo().storageEngines;
print("Supported storage engines: " + storageEngines);
if (Array.contains(storageEngines, "wiredTiger")) {
function checkCollectionOptions(database) {
var collectionsInfos = database.getCollectionInfos();
printjson(collectionsInfos);
var info = collectionsInfos.filter(function(c) {
return c.name == "sharding_system_namespaces";
})[0];
assert.eq(info.options.storageEngine.wiredTiger.configString, "block_compressor=zlib");
}
db.createCollection("sharding_system_namespaces",
{
storageEngine: {
wiredTiger: { configString: "block_compressor=zlib" }
}
});
checkCollectionOptions(db);
assert.commandWorked(db.adminCommand({ enableSharding: 'test' }));
st.ensurePrimaryShard('test', 'shard0001');
assert.commandWorked(db.adminCommand({ shardCollection: coll + '', key: { x: 1 }}));
coll.insert({x: 0});
coll.insert({x: 10});
assert.commandWorked(db.adminCommand({ split: coll + '', middle: { x: 5 }}));
st.printShardingStatus();
var primaryShard = st.getServer("test");
anotherShard = st.getOther( primaryShard );
assert.commandWorked(db.adminCommand({
movechunk: coll + '',
find: { x: 5 },
to: anotherShard.name
}));
st.printShardingStatus();
checkCollectionOptions(anotherShard.getDB("test"));
}
else {
print("Skipping test. wiredTiger engine not supported by mongod binary.");
}
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