morningman commented on issue #6949:
URL: 
https://github.com/apache/incubator-doris/issues/6949#issuecomment-953029948


   There is a problem that for `replace` value, Doris cannot guarantee the 
"order" of the data with the same key in a batch of imported data, so there may 
be problems between different replicas due to the issue of the different 
"order", resulting in inconsistent replica data.
   
   You can solve this by using [sequence 
column](http://doris.incubator.apache.org/master/zh-CN/administrator-guide/load-data/sequence-column-manual.html)
 with UNIQUE KEY.


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