fengpod edited a comment on pull request #1442:
URL: https://github.com/apache/kylin/pull/1442#issuecomment-707029537


   For better query performance,we put important data on ssd for core business 
use。We test the query performance of the same data on HDD and SSD,the 
performance of SSD for more than 100000 scans is significantly improved by 
about 40%.This patch has been deployed our production env。


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