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https://issues.apache.org/jira/browse/FLINK-16903?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17073371#comment-17073371
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Jingsong Lee edited comment on FLINK-16903 at 4/2/20, 5:24 AM:
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Hi Danny, I thought about this way, but I also need a variable to turn on the
parallelism inference of connector.
So the interface for end user can be:
# Two interfaces: table hint for specify parallelism(/*+ PARALLELISM(3) */ ) +
SupportsCustomParallelism(inference with table properties).
# One interface: SupportsCustomParallelism(With table properties, including
inference and parallelism specify)
I thought we can choose option 2 to provide a unify interface for table
parallelism. Option 1 can unify table parallelism and operator parallelism(If
we have).
was (Author: lzljs3620320):
Hi Danny, I thought about this way, but I also need a variable to turn on the
parallelism inference of connector.
So the interface for end user can be:
# Two interfaces: table hint for specify parallelism(/*+ PARALLELISM(3) */ ) +
SupportsCustomParallelism(inference with table properties).
# One interface: SupportsCustomParallelism(With table properties, including
inference and parallelism specify)
I think we can choose option 2 to provide a unify interface.
> 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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