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https://issues.apache.org/jira/browse/FLINK-16903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17072891#comment-17072891
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Timo Walther commented on FLINK-16903:
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[~lzljs3620320] Thanks for elaborating. I understand your use cases. The
question is who would read such a {{sink.parallelism}} property? The planner
(=globally the same property for all sinks) or table sink factory? Or we should
we have a special {{SupportsCustomParallelism}} ability?
> Add sink.parallelism for file system factory
> --------------------------------------------
>
> Key: FLINK-16903
> URL: https://issues.apache.org/jira/browse/FLINK-16903
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Runtime
> Reporter: Jingsong Lee
> Priority: Major
> Fix For: 1.11.0
>
>
> A single task may be writing multiple files at the same time. If the
> parallelism is too high, it may lead to a large number of small files. If the
> parallelism is too small, the performance is not enough. This requires that
> the user can specify parallelism.
> * Default is the same as upstream transformation
> * Users can specify parallelism too.
> |‘connector.sink.parallelism’ = ...|
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