[GitHub] [incubator-dolphinscheduler] 597365581 commented on pull request #3892: fixed queryTaskInstanceListPaging query slow

Mon, 12 Oct 2020 21:40:21 -0700 


597365581 commented on pull request #3892:
URL: 
https://github.com/apache/incubator-dolphinscheduler/pull/3892#issuecomment-707481845


   
![image](https://user-images.githubusercontent.com/62982788/95816185-0ad25280-0d51-11eb-8896-8289a68ee612.png)
   任务实例查询慢，最后定位sql 时发现是 查询了task_json，而task_json 是longtext，在数据量大的时候，严重影响性能。但是 
这个字段 在结果中又不需要被使用。


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