[jira] [Assigned] (FLINK-39200) Skip deserialization of unsubscribed tables in MySql CDC binary log client

["Yanquan Lv (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-39200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yanquan Lv reassigned FLINK-39200:
----------------------------------

    Assignee: Cong Cheng

> Skip deserialization of unsubscribed tables in MySql CDC binary log client
> --------------------------------------------------------------------------
>
>                 Key: FLINK-39200
>                 URL: https://issues.apache.org/jira/browse/FLINK-39200
>             Project: Flink
>          Issue Type: New Feature
>          Components: Flink CDC
>    Affects Versions: cdc-3.6.0
>            Reporter: Cong Cheng
>            Assignee: Cong Cheng
>            Priority: Major
>
> Currently, the MySQL row event deserializers in Flink CDC always fully deserialize WRITE/UPDATE/DELETE binlog events for all tables, regardless of whether the tables are actually subscribed by the connector.
> This will lead to unnecessary CPU and memory overhead for rows from unmonitored tables especially when a small portion of overall tables are consumed. 
> Thus, the deserialization of unmonitored tables should be skipped early instead of filtering deserialized changed rows afterwards.



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