[jira] [Assigned] (FLINK-18665) Filesystem connector should use TableSchema exclude computed columns

["Jark Wu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-18665?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jark Wu reassigned FLINK-18665:
-------------------------------

    Assignee: Leonard Xu

> Filesystem connector should use TableSchema exclude computed columns
> --------------------------------------------------------------------
>
>                 Key: FLINK-18665
>                 URL: https://issues.apache.org/jira/browse/FLINK-18665
>             Project: Flink
>          Issue Type: New Feature
>          Components: Connectors / FileSystem, Table SQL / Ecosystem
>            Reporter: Jark Wu
>            Assignee: Leonard Xu
>            Priority: Major
>             Fix For: 1.12.0, 1.11.2
>
>
> This is reported in http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/How-to-use-a-nested-column-for-CREATE-TABLE-PARTITIONED-BY-td36796.html
> {code}
> create table navi (
>   a STRING,
>   location ROW<lastUpdateTime BIGINT, transId STRING>
> ) with (
>   'connector' = 'filesystem',
>   'path' = 'east-out',
>   'format' = 'json'
> )
> CREATE TABLE output (
>   `partition` AS location.transId
> ) PARTITIONED BY (`partition`)
> WITH (
>   'connector' = 'filesystem',
>   'path' = 'east-out',
>   'format' = 'json'
> ) LIKE navi (EXCLUDING ALL)
> tEnv.sqlQuery("SELECT type, location FROM navi").executeInsert("output")
> {code}
> It throws the following exception 
> {code}
> Exception in thread "main" org.apache.flink.table.api.ValidationException: The field count of logical schema of the table does not match with the field count of physical schema
> . The logical schema: [STRING,ROW<`lastUpdateTime` BIGINT, `transId` STRING>]
> The physical schema: [STRING,ROW<`lastUpdateTime` BIGINT, `transId` STRING>,STRING].
> {code}
> The reason is that {{FileSystemTableFactory#createTableSource}} should use schema excluded computed column, not the original catalog table schema.
> [1]: https://github.com/apache/flink/blob/master/flink-table/flink-table-runtime-blink/src/main/java/org/apache/flink/table/filesystem/FileSystemTableFactory.java#L78



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