Lee SeungMin created FLINK-35740:
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Summary: [mysql] Allow column as chunk key even if not in Primary
Keys
Key: FLINK-35740
URL: https://issues.apache.org/jira/browse/FLINK-35740
Project: Flink
Issue Type: Improvement
Components: Flink CDC
Reporter: Lee SeungMin
Change the input chunk key to allow it even if it is not in the primary keys.
There are cases where the primary key is not a numeric type, such as varchar or
varbinary. In this case, the `distributed factor` and `chunk range` may be
calculated incorrectly, resulting in one chunk containing many records.
This may cause out of memory in the task manager.
Actually, in our company, there was a mysql tables that PK is a varbinary
column and the above situation occurred.
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