vagetablechicken commented on issue #4027:
URL: 
https://github.com/apache/incubator-doris/issues/4027#issuecomment-654714129


   > I see.
   > I am curious about detail of `some reason the flush time or count in one 
BE is always longer/higher than others`.
   > Under what circumstances will this problem occur and what is the 
corresponding processing strategy?
   
   If flush more times, it's probably because the loading data are only sent to 
a few BE. Maybe key cols are improper, or partition bucket num is too 
small(bucket num can be set in each parition, maybe a few partitions has 
improper bucket num, hard to find out).
   If flush for too long, maybe the hard disk has some errors.
   
   Actually, if we have tablet monitoring data shown on BE web or other place, 
we can easily find the problem. 
   e.g. it's slow read or write? which tablet is abnormal? blabla.
   The tablet monitoring data could contain the flush time&count.


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