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sh.disableAutoSplit() Disables the autosplit flag in the 禁用config.settings collection. config.settings集合中的autosplit标志。When auto-splitting is enabled for a sharded cluster, MongoDB automatically splits chunks based on the shard key values the chunk represents to keep the chunks from growing too large.当为分片集群启用自动拆分时，MongoDB会根据区块表示的分片键值自动拆分区块，以防止区块变得过大。
Auto-splitting is enabled by default. For more information on chunk splits, see Chunk Splits.默认情况下启用自动拆分。有关区块分割的详细信息，请参阅区块分割。
You can only run 只能从连接到sh.disableAutoSplit() from a mongosh session that is connected to a mongos instance. mongos实例的mongosh会话中运行sh.disableAutoSplit()。sh.disableAutoSplit() errors if run on a mongod instance.mongod实例上运行sh.disableAutoSplit()，则它将错误。
Starting in MongoDB 4.2, 从MongoDB 4.2开始，sh.stopBalancer() also disables auto-splitting for the sharded cluster.sh.stopBalancer()还禁用了分片集群的自动拆分。