[jira] [Updated] (FLINK-35102) Incorret Type mapping for Flink CDC Doris connector

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-35102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-35102:
-----------------------------------
    Labels: pull-request-available  (was: )

> Incorret Type mapping for Flink CDC Doris connector
> ---------------------------------------------------
>
>                 Key: FLINK-35102
>                 URL: https://issues.apache.org/jira/browse/FLINK-35102
>             Project: Flink
>          Issue Type: Bug
>          Components: Flink CDC
>            Reporter: Xiqian YU
>            Priority: Major
>              Labels: pull-request-available
>
> According to Flink CDC Doris connector docs, CHAR and VARCHAR are mapped to 3-bytes since Doris uses UTF-8 variable-length encoding internally.
> |CHAR(n)|CHAR(n*3)|In Doris, strings are stored in UTF-8 encoding, so English characters occupy 1 byte and Chinese characters occupy 3 bytes. The length here is multiplied by 3. The maximum length of CHAR is 255. Once exceeded, it will automatically be converted to VARCHAR type.|
> |VARCHAR(n)|VARCHAR(n*3)|Same as above. The length here is multiplied by 3. The maximum length of VARCHAR is 65533. Once exceeded, it will automatically be converted to STRING type.|
> However, currently Doris connector maps `CHAR(n)` to `CHAR(n)` and `VARCHAR(n)` to `VARCHAR(n * 4)`, which is inconsistent with specification in docs.



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