You are viewing a plain text version of this content. The canonical link for it is here.

Posted to issues@spark.apache.org by "Lianhui Wang (JIRA)" <ji...@apache.org> on 2016/07/09 03:31:10 UTC

[jira] [Updated] (SPARK-16456) Reuse the uncorrelated scalar subqueries with the same logical plan in a query

     [ https://issues.apache.org/jira/browse/SPARK-16456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lianhui Wang updated SPARK-16456:
---------------------------------
    Description: In TPCDS Q14, the same physical plan of uncorrelated scalar subqueries from a CTE could be executed multiple times, we should re-use the same result  to avoid the duplicated computing.  (was: In TPCDS Q14, the same physical plan of uncorrelated scalar subqueries from a CTE could be executed multiple times, we should re-use the same result  to avoid the duplicated computing on the same uncorrelated scalar subquery.)

> Reuse the uncorrelated scalar subqueries with the same logical plan in a query
> ------------------------------------------------------------------------------
>
>                 Key: SPARK-16456
>                 URL: https://issues.apache.org/jira/browse/SPARK-16456
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: Lianhui Wang
>
> In TPCDS Q14, the same physical plan of uncorrelated scalar subqueries from a CTE could be executed multiple times, we should re-use the same result  to avoid the duplicated computing.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org