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https://issues.apache.org/jira/browse/FLINK-14676?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16971109#comment-16971109
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Jark Wu commented on FLINK-14676:
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Could you use {{StreamTableSource}} instead? The returned DataStream can be
set a dedicated parallelism according some statistics.
> Introduce parallelism inference for InputFormatTableSource
> ----------------------------------------------------------
>
> Key: FLINK-14676
> URL: https://issues.apache.org/jira/browse/FLINK-14676
> Project: Flink
> Issue Type: New Feature
> Components: Table SQL / Planner
> Reporter: Jingsong Lee
> Priority: Major
> Fix For: 1.10.0
>
>
> FLINK-12801 has introduce parallelism setting for table, but because
> TableSource generate DataStream, maybe DataStream is not a real source, that
> will lead to some shuffle errors. So FLINK-13494 remove these implementations.
> In this ticket, I would like to introduce parallelism inference only for
> InputFormatTableSource, the RowCount of InputFormatTableSource is more
> accurate than downstream stages. It is worth to automatically generate its
> parallelism.
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