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https://issues.apache.org/jira/browse/FLINK-21415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17286915#comment-17286915
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Shuai Xia commented on FLINK-21415:
-----------------------------------
Question:
[JdbcRowDataLookupFunction|https://github.com/apache/flink/blob/2a78440bd333a68c24acfeea016f35ec63bbe3f9/flink-connectors/flink-connector-jdbc/src/main/java/org/apache/flink/connector/jdbc/table/JdbcRowDataLookupFunction.java#L153]
> JDBC does not query data, and the cache will store an ArrayList without data
> ----------------------------------------------------------------------------
>
> Key: FLINK-21415
> URL: https://issues.apache.org/jira/browse/FLINK-21415
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Affects Versions: 1.12.1
> Reporter: Shuai Xia
> Priority: Major
>
> JDBC does not query data, and the cache will store an ArrayList without data.
> We should add size judgment.
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