MongoDB 3.2.4 發布，分布式文檔存儲數據庫

MongoDB 3.2.4 發布了，MongoDB是一個介于關系數據庫和非關系數據庫之間的產品，是非關系數據庫當中功能最豐富，最像關系數據庫的。他支持的數據結構非常松散，是類似json的bjson格式，因此可以存儲比較復雜的數據類型。Mongo最大的特點是他支持的查詢語言非常強大，其語法有點類似于面向對象的查詢語言，幾乎可以實現類似關系數據庫單表查詢的絕大部分功能，而且還支持對數據建立索引。

改進日志：

Security

SERVER-22237 Built-in role that allows full control over data, but not security or topology

Sharding

• SERVER-21758 Test behavior when ‘nearest’ config server has severe replication lag

• SERVER-22184 Operations that fail against a secondary in a sharded cluster may have their error message swallowed

• SERVER-22239 wait for replication after duplicate key error from insert operations

• SERVER-22297 Add targeted jstests for csrs upgrade during common operations

• SERVER-22299 Add a jstest that runs moveChunk directly against a mongod that is not yet sharding aware, providing an SCCC connection string for the config servers

• SERVER-22524 Only interrupt mapReduce on catalog manager swap if it is outputting to a sharded collection

• SERVER-22543 multi_write_target.js should not rely on the order of shard ids

• SERVER-22547 add support for config server ReplSetTest options to ShardingTest

• SERVER-22553 mongos_shard_failure_tolerance.js should not rely on order of shard ids

• SERVER-22569 Initialization of eooElement static local variable isn’t thread safe with MSVC 2013

• SERVER-22584 Make sure IncompatibleCatalogManager errors fully propagate wherever thrown

• SERVER-22585 CatalogManagerLegacy needs retry logic on config server reads

• SERVER-22590 applyChunkOpsDeprecated retries and throws an error on preCondition no longer matching because the original write worked

• SERVER-22592 Remove duplicate check for ‘enabled’ from ShardingState::_refreshMetadata

• SERVER-22627 ShardRegistry should mark hosts which failed due to OperationTimeout as faulty

• SERVER-22783 CSRS catalog manager writes should retry on WriteConcernFailed error

• SERVER-22789 CSRS catalog manager writes should use writeConcern majority

• SERVER-22797 Calls to ShardRegistry::reload needs to be serialized

• SERVER-22822 Prevent mongod step down during moveChunk in balance_repl.js and sharding_rs2.js

• SERVER-22849 Shard registry should update config last visible opTime even on command errors

• SERVER-22859 SCCC config server reads need to specify slaveOk

• SERVER-22862 Deadlock between ReplicaSetMonitor updating the connection string for a shard and reloading the ShardRegistry

• SERVER-22863 sharding read_after_optime.js test timeout should exceed ping interval

• SERVER-22878 rewrite checks in csrs_upgrade_mongod_using_movechunk.js after new assert.contains implementation

• SERVER-22880 add requires_persistence tag to csrs_upgrade_mongod_using_movechunk.js

Replication

• SERVER-21698 Add error-checking for isMaster() return values in jstests/libs/election_timing_test.js

• SERVER-21972 improve naming of ReplicationCoordinator and TopologyCoordinator unittests

• SERVER-22269 ReadConcern: majority does not reflect journaled state on PRIMARY

• SERVER-22276 implement “j” flag in write concern apply to secondary as well as primary

• SERVER-22277 test “j” flag in write concern apply to secondary as well as primary

• SERVER-22287 Merging replica sets with replication protocol version 1 may result in two primaries

• SERVER-22426 priority_takeover_one_node_higher_priority.js should call ReplSetTest.awaitReplication() before stepping primary down

• SERVER-22428 Log read-after-optime timeouts

• SERVER-22495 Running without journaling doesn’t set all OpTimes (lastDurableOpTime)

• SERVER-22521 default timeout for ReplSetTest.initiate() from 60 seconds to 120 seconds should be longer to accommodate slow hosts

• SERVER-22595 Reactivate rollback4.js

• SERVER-22598 ensure all default write concern options use sync unset

• SERVER-22617 SnapshotThread hits invariant due to reading oplog entries out of order

• SERVER-22683 enableMajorityReadConcern option cannot be disabled if specified

• SERVER-22728 if journaling is disabled, update durableOpTime when appliedOpTime updates

• SERVER-22731 give correct error message when running initiate on a non-replset mongod

下載地址：https://www.mongodb.org/dl/win32/x86_64-2008plus-ssl

來自： http://www.oschina.net//news/71327/mongodb-3-2-4