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MongDB中数据分片时选择了错误的shard key,如何更改该错误的shard key?
對於分片設置,shard key是MongoDB用來識別分塊對應檔的憑證。當你插入一個檔後,你就不可以對檔的shard key進行更改。而這裡的解決方案是把文檔刪除然後重新建立,這樣就允許把它指定到對應的分塊了。 總結:shard key不可以修改,必要的時候可以刪除檔重新建立。
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