58 lines
2.0 KiB
JavaScript
58 lines
2.0 KiB
JavaScript
// Tests that dropping and re-adding a shard with the same name to a cluster doesn't mess up
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// migrations
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(function() {
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'use strict';
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var st = new ShardingTest({ shards: 2, mongos: 1 });
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var mongos = st.s;
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var admin = mongos.getDB('admin');
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var config = mongos.getDB('config');
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var coll = mongos.getCollection('foo.bar');
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// Get all the shard info and connections
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var shards = [];
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config.shards.find().sort({ _id: 1 }).forEach(function(doc) {
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shards.push(Object.merge(doc, { conn: new Mongo(doc.host) }));
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});
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// Shard collection
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assert.commandWorked(mongos.adminCommand({ enableSharding: coll.getDB() + ''}));
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// Just to be sure what primary we start from
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st.ensurePrimaryShard(coll.getDB().getName(), shards[0]._id);
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assert.commandWorked(mongos.adminCommand({ shardCollection: coll + '', key: { _id: 1 } }));
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// Insert one document
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assert.writeOK(coll.insert({ hello: 'world'}));
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// Migrate the collection to and from shard1 so shard0 loads the shard1 host
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assert.commandWorked(mongos.adminCommand(
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{ moveChunk: coll + '', find: { _id: 0 }, to: shards[1]._id, _waitForDelete: true }));
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assert.commandWorked(mongos.adminCommand(
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{ moveChunk: coll + '', find: { _id: 0 }, to: shards[0]._id, _waitForDelete: true }));
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// Drop and re-add shard with the same name but a new host.
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assert.commandWorked(mongos.adminCommand({ removeShard: shards[1]._id }));
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assert.commandWorked(mongos.adminCommand({ removeShard: shards[1]._id }));
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var shard2 = MongoRunner.runMongod({});
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assert.commandWorked(mongos.adminCommand({ addShard: shard2.host, name: shards[1]._id }));
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jsTest.log('Shard was dropped and re-added with same name...');
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st.printShardingStatus();
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shards[0].conn.getDB('admin').runCommand({ setParameter: 1, traceExceptions: true });
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shard2.getDB('admin').runCommand({ setParameter: 1, traceExceptions: true });
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// Try a migration
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assert.commandWorked(mongos.adminCommand({ moveChunk: coll + '', find: { _id: 0 }, to: shards[1]._id }));
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assert.eq('world', shard2.getCollection(coll + '').findOne().hello);
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st.stop();
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})();
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