[jira] [Created] (FLINK-9586) Make collection sources parallelisable

[Shang Yuanchun (Jira)]

Sina Madani created FLINK-9586:
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             Summary: Make collection sources parallelisable
                 Key: FLINK-9586
                 URL: https://issues.apache.org/jira/browse/FLINK-9586
             Project: Flink
          Issue Type: Wish
          Components: DataSet API
    Affects Versions: 1.5.0
            Reporter: Sina Madani


The note in [https://ci.apache.org/projects/flink/flink-docs-release-1.5/dev/datastream_api.html#collection-data-sources]

states that Collecitons are mainly there for testing and do not support parallelism. I believe this to be an unnecessary assumption - I'm sure there are plenty of use cases that already have the data they need to distribute ready at hand. It seems strange that a fixed collection of inputs cannot be parallelised by Flink, which would require users to write their Collections into a text file and re-read them just to get parallelisation.

 



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