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Posted to issues@flink.apache.org by "Danny Chen (Jira)" <ji...@apache.org> on 2020/05/28 03:06:00 UTC

[jira] [Updated] (FLINK-15556) Add a switch for PushProjectIntoTableSourceScanRule

     [ https://issues.apache.org/jira/browse/FLINK-15556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Danny Chen updated FLINK-15556:
-------------------------------
    Fix Version/s:     (was: 1.11.0)
                   1.12.0

> Add a switch for PushProjectIntoTableSourceScanRule
> ---------------------------------------------------
>
>                 Key: FLINK-15556
>                 URL: https://issues.apache.org/jira/browse/FLINK-15556
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table SQL / Planner
>    Affects Versions: 1.10.0
>            Reporter: hailong wang
>            Priority: Minor
>             Fix For: 1.12.0
>
>
> In some case, For the project push down, The  digest of tableSource maybe different. For example, If we create a jdbc tablesource, and is used twice after it for different column, the source can not be reused for the different digest. In this case, the query io will more precious, So we can add a switch to turn off project push down, and the reused the source.



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