359 lines
16 KiB
JavaScript
359 lines
16 KiB
JavaScript
//
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// Basic tests for shardCollection.
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//
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(function() {
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'use strict';
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var st = new ShardingTest({mongos: 1, shards: 2});
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var kDbName = 'db';
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var mongos = st.s0;
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function testAndClenaupWithKeyNoIndexFailed(keyDoc) {
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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var ns = kDbName + '.foo';
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assert.commandFailed(mongos.adminCommand({shardCollection: ns, key: keyDoc}));
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assert.eq(mongos.getDB('config').collections.count({_id: ns, dropped: false}), 0);
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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}
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function testAndClenaupWithKeyOK(keyDoc) {
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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assert.commandWorked(mongos.getDB(kDbName).foo.createIndex(keyDoc));
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var ns = kDbName + '.foo';
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assert.eq(mongos.getDB('config').collections.count({_id: ns, dropped: false}), 0);
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assert.commandWorked(mongos.adminCommand({shardCollection: ns, key: keyDoc}));
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assert.eq(mongos.getDB('config').collections.count({_id: ns, dropped: false}), 1);
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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}
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function testAndClenaupWithKeyNoIndexOK(keyDoc) {
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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var ns = kDbName + '.foo';
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assert.eq(mongos.getDB('config').collections.count({_id: ns, dropped: false}), 0);
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assert.commandWorked(mongos.adminCommand({shardCollection: ns, key: keyDoc}));
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assert.eq(mongos.getDB('config').collections.count({_id: ns, dropped: false}), 1);
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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}
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function getIndexSpecByName(coll, indexName) {
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var indexes = coll.getIndexes().filter(function(spec) {
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return spec.name === indexName;
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});
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assert.eq(1, indexes.length, 'index "' + indexName + '" not found"');
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return indexes[0];
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}
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// Fail if db is not sharded.
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assert.commandFailed(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: 1}}));
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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// Fail if db is not sharding enabled.
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assert.commandFailed(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: 1}}));
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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// Verify wrong arguments errors.
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assert.commandFailed(mongos.adminCommand({shardCollection: 'foo', key: {_id: 1}}));
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assert.commandFailed(mongos.adminCommand({shardCollection: 'foo', key: "aaa"}));
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// shardCollection may only be run against admin database.
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assert.commandFailed(
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mongos.getDB('test').runCommand({shardCollection: kDbName + '.foo', key: {_id: 1}}));
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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// Can't shard if key is not specified.
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assert.commandFailed(mongos.adminCommand({shardCollection: kDbName + '.foo'}));
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assert.commandFailed(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {}}));
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// Verify key format
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assert.commandFailed(
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mongos.adminCommand({shardCollection: kDbName + '.foo', key: {aKey: "hahahashed"}}));
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// Shard key cannot contain embedded objects.
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assert.commandFailed(
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mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: {a: 1}}}));
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assert.commandFailed(
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mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: {'a.b': 1}}}));
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// Shard key can contain dotted path to embedded element.
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assert.commandWorked(mongos.adminCommand(
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{shardCollection: kDbName + '.shard_key_dotted_path', key: {'_id.a': 1}}));
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//
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// Test shardCollection's idempotency
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//
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// Succeed if a collection is already sharded with the same options.
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assert.commandWorked(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: 1}}));
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assert.commandWorked(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: 1}}));
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// Specifying the simple collation or not specifying a collation should be equivalent, because
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// if no collation is specified, the collection default collation is used.
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assert.commandWorked(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {_id: 1}, collation: {locale: 'simple'}}));
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// Fail if the collection is already sharded with different options.
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// different shard key
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assert.commandFailed(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {x: 1}}));
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// different 'unique'
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assert.commandFailed(
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mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: 1}, unique: true}));
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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// Shard empty collections no index required.
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testAndClenaupWithKeyNoIndexOK({_id: 1});
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testAndClenaupWithKeyNoIndexOK({_id: 'hashed'});
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// Shard by a plain key.
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testAndClenaupWithKeyNoIndexOK({a: 1});
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// Cant shard collection with data and no index on the shard key.
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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testAndClenaupWithKeyNoIndexFailed({a: 1});
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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testAndClenaupWithKeyOK({a: 1});
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// Shard by a hashed key.
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testAndClenaupWithKeyNoIndexOK({a: 'hashed'});
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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testAndClenaupWithKeyNoIndexFailed({a: 'hashed'});
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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testAndClenaupWithKeyOK({a: 'hashed'});
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// Shard by a compound key.
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testAndClenaupWithKeyNoIndexOK({x: 1, y: 1});
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assert.writeOK(mongos.getDB(kDbName).foo.insert({x: 1, y: 1}));
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testAndClenaupWithKeyNoIndexFailed({x: 1, y: 1});
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assert.writeOK(mongos.getDB(kDbName).foo.insert({x: 1, y: 1}));
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testAndClenaupWithKeyOK({x: 1, y: 1});
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testAndClenaupWithKeyNoIndexFailed({x: 'hashed', y: 1});
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testAndClenaupWithKeyNoIndexFailed({x: 'hashed', y: 'hashed'});
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// Shard by a key component.
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testAndClenaupWithKeyOK({'z.x': 1});
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testAndClenaupWithKeyOK({'z.x': 'hashed'});
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// Can't shard by a multikey.
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assert.commandWorked(mongos.getDB(kDbName).foo.createIndex({a: 1}));
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: [1, 2, 3, 4, 5], b: 1}));
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testAndClenaupWithKeyNoIndexFailed({a: 1});
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assert.commandWorked(mongos.getDB(kDbName).foo.createIndex({a: 1, b: 1}));
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: [1, 2, 3, 4, 5], b: 1}));
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testAndClenaupWithKeyNoIndexFailed({a: 1, b: 1});
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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testAndClenaupWithKeyNoIndexFailed({a: 'hashed'});
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 1, b: 1}));
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testAndClenaupWithKeyOK({a: 'hashed'});
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// Cant shard by a parallel arrays.
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: [1, 2, 3, 4, 5], b: [1, 2, 3, 4, 5]}));
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testAndClenaupWithKeyNoIndexFailed({a: 1, b: 1});
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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// Can't shard on unique hashed key.
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assert.commandFailed(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {aKey: "hashed"}, unique: true}));
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// If shardCollection has unique:true it must have a unique index.
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assert.commandWorked(mongos.getDB(kDbName).foo.createIndex({aKey: 1}));
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assert.commandFailed(
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mongos.adminCommand({shardCollection: kDbName + '.foo', key: {aKey: 1}, unique: true}));
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//
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// Session-related tests
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//
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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// shardCollection can be called under a session.
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const sessionDb = mongos.startSession().getDatabase(kDbName);
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assert.commandWorked(
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sessionDb.adminCommand({shardCollection: kDbName + '.foo', key: {_id: 'hashed'}}));
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sessionDb.getSession().endSession();
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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//
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// Collation-related tests
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//
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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// shardCollection should fail when the 'collation' option is not a nested object.
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assert.commandFailed(
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mongos.adminCommand({shardCollection: kDbName + '.foo', key: {_id: 1}, collation: true}));
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// shardCollection should fail when the 'collation' option cannot be parsed.
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assert.commandFailed(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {_id: 1}, collation: {locale: 'unknown'}}));
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// shardCollection should fail when the 'collation' option is valid but is not the simple
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// collation.
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assert.commandFailed(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {_id: 1}, collation: {locale: 'en_US'}}));
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// shardCollection should succeed when the 'collation' option specifies the simple collation.
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assert.commandWorked(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {_id: 1}, collation: {locale: 'simple'}}));
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// shardCollection should fail when it does not specify the 'collation' option but the
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// collection has a non-simple default collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(
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mongos.getDB(kDbName).createCollection('foo', {collation: {locale: 'en_US'}}));
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assert.commandFailed(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {a: 1}}));
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// shardCollection should fail for the key pattern {_id: 1} if the collection has a non-simple
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// default collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(
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mongos.getDB(kDbName).createCollection('foo', {collation: {locale: 'en_US'}}));
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assert.commandFailed(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {_id: 1}, collation: {locale: 'simple'}}));
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// shardCollection should fail for the key pattern {a: 1} if there is already an index 'a_1',
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// but it has a non-simple collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(
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mongos.getDB(kDbName).foo.createIndex({a: 1}, {collation: {locale: 'en_US'}}));
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assert.commandFailed(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {a: 1}}));
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// shardCollection should succeed for the key pattern {a: 1} and collation {locale: 'simple'} if
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// there is no index 'a_1', but there is a non-simple collection default collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(
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mongos.getDB(kDbName).createCollection('foo', {collation: {locale: 'en_US'}}));
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assert.commandWorked(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {a: 1}, collation: {locale: 'simple'}}));
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var indexSpec = getIndexSpecByName(mongos.getDB(kDbName).foo, 'a_1');
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assert(!indexSpec.hasOwnProperty('collation'));
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// shardCollection should succeed for the key pattern {a: 1} if there are two indexes on {a: 1}
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// and one has the simple collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).foo.createIndex({a: 1}, {name: "a_1_simple"}));
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assert.commandWorked(mongos.getDB(kDbName).foo.createIndex(
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{a: 1}, {collation: {locale: 'en_US'}, name: "a_1_en_US"}));
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assert.commandWorked(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {a: 1}}));
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// shardCollection should fail on a non-empty collection when the only index available with the
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// shard key as a prefix has a non-simple collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(
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mongos.getDB(kDbName).createCollection('foo', {collation: {locale: 'en_US'}}));
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assert.writeOK(mongos.getDB(kDbName).foo.insert({a: 'foo'}));
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// This index will inherit the collection's default collation.
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assert.commandWorked(mongos.getDB(kDbName).foo.createIndex({a: 1}));
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assert.commandFailed(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {a: 1}, collation: {locale: 'simple'}}));
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// shardCollection should succeed on an empty collection with a non-simple default collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(
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mongos.getDB(kDbName).createCollection('foo', {collation: {locale: 'en_US'}}));
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assert.commandWorked(mongos.adminCommand(
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{shardCollection: kDbName + '.foo', key: {a: 1}, collation: {locale: 'simple'}}));
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// shardCollection should succeed on an empty collection with no default collation.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).createCollection('foo'));
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assert.commandWorked(mongos.adminCommand({shardCollection: kDbName + '.foo', key: {a: 1}}));
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assert.commandWorked(mongos.getDB(kDbName).dropDatabase());
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//
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// Tests for the shell helper sh.shardCollection().
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//
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db = mongos.getDB(kDbName);
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assert.commandWorked(mongos.adminCommand({enableSharding: kDbName}));
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// shardCollection() propagates the shard key and the correct defaults.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).createCollection('foo'));
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assert.commandWorked(sh.shardCollection(kDbName + '.foo', {a: 1}));
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indexSpec = getIndexSpecByName(mongos.getDB(kDbName).foo, 'a_1');
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assert(!indexSpec.hasOwnProperty('unique'), tojson(indexSpec));
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assert(!indexSpec.hasOwnProperty('collation'), tojson(indexSpec));
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// shardCollection() propagates the value for 'unique'.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).createCollection('foo'));
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assert.commandWorked(sh.shardCollection(kDbName + '.foo', {a: 1}, true));
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indexSpec = getIndexSpecByName(mongos.getDB(kDbName).foo, 'a_1');
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assert(indexSpec.hasOwnProperty('unique'), tojson(indexSpec));
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assert.eq(indexSpec.unique, true, tojson(indexSpec));
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).createCollection('foo'));
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assert.commandWorked(sh.shardCollection(kDbName + '.foo', {a: 1}, false));
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indexSpec = getIndexSpecByName(mongos.getDB(kDbName).foo, 'a_1');
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assert(!indexSpec.hasOwnProperty('unique'), tojson(indexSpec));
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// shardCollections() 'options' parameter must be an object.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).createCollection('foo'));
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assert.throws(function() {
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sh.shardCollection(kDbName + '.foo', {a: 1}, false, 'not an object');
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});
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// shardCollection() propagates the value for 'collation'.
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// Currently only the simple collation is supported.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).createCollection('foo'));
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assert.commandFailed(
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sh.shardCollection(kDbName + '.foo', {a: 1}, false, {collation: {locale: 'en_US'}}));
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assert.commandWorked(
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sh.shardCollection(kDbName + '.foo', {a: 1}, false, {collation: {locale: 'simple'}}));
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indexSpec = getIndexSpecByName(mongos.getDB(kDbName).foo, 'a_1');
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assert(!indexSpec.hasOwnProperty('collation'), tojson(indexSpec));
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(
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mongos.getDB(kDbName).createCollection('foo', {collation: {locale: 'en_US'}}));
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assert.commandFailed(sh.shardCollection(kDbName + '.foo', {a: 1}));
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assert.commandFailed(
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sh.shardCollection(kDbName + '.foo', {a: 1}, false, {collation: {locale: 'en_US'}}));
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assert.commandWorked(
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sh.shardCollection(kDbName + '.foo', {a: 1}, false, {collation: {locale: 'simple'}}));
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indexSpec = getIndexSpecByName(mongos.getDB(kDbName).foo, 'a_1');
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assert(!indexSpec.hasOwnProperty('collation'), tojson(indexSpec));
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// shardCollection() propagates the value for 'numInitialChunks'.
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mongos.getDB(kDbName).foo.drop();
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assert.commandWorked(mongos.getDB(kDbName).createCollection('foo'));
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assert.commandWorked(
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sh.shardCollection(kDbName + '.foo', {a: "hashed"}, false, {numInitialChunks: 5}));
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st.printShardingStatus();
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var numChunks = st.config.chunks.find({ns: kDbName + '.foo'}).count();
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assert.eq(numChunks, 5, "unexpected number of chunks");
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st.stop();
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})();
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