blink planner 有这个问题吗？
jun su <sujun891...@gmail.com> 于2020年9月22日周二 下午3:27写道：
> hi all,
>
> 环境: flink-1.9.2 flink table planner
> 现象: 代码一直在 VolcanoPlanner.findBestExp()方法中出不来, 直到OOM
>
> 发现在嵌套4层时 findBestExp方法中while(true)会循环3w多次后成功退出, 嵌套5层会达到几十万级别, 导致进程OOM
> -----------------------------------------------
> 代码：
>
> fbTableEnv.registerTableSource("source",orcTableSource)
>
> val select = fbTableEnv.sqlQuery("select
> Auth_Roles,Target_UserSid,Thread_ID,access_path,action from source ")
>
> fbTableEnv.registerTable("selectTable",select)
>
> val t1 = fbTableEnv.sqlQuery("select
> Auth_Roles,Target_UserSid,Thread_ID,access_path,action from selectTable
> where Auth_Roles like 'a%'")
> fbTableEnv.registerTable("t1",t1)
>
> val t2 = fbTableEnv.sqlQuery("select
> Auth_Roles,Target_UserSid,Thread_ID,access_path,action from t1 where
> Target_UserSid= 'b'")
> fbTableEnv.registerTable("t2",t2)
>
> val t3 = fbTableEnv.sqlQuery("select
> Auth_Roles,Target_UserSid,Thread_ID,access_path,action from t2 where
> Thread_ID= 'c'")
> fbTableEnv.registerTable("t3",t3)
>
> val t4 = fbTableEnv.sqlQuery("select
> Auth_Roles,Target_UserSid,Thread_ID,access_path,action from t3 where
> access_path= 'd'")
> fbTableEnv.registerTable("t4",t4)
>
> val t5 = fbTableEnv.sqlQuery("select
> Auth_Roles,Target_UserSid,Thread_ID,access_path,action from t4 where
> action= 'e'")
>
>
>
> --
> Best,
> Jun Su
>
