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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2019/06/11 11:11:00 UTC

[jira] [Updated] (FLINK-12801) Set parallelism for batch SQL

     [ https://issues.apache.org/jira/browse/FLINK-12801?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated FLINK-12801:
-----------------------------------
    Labels: pull-request-available  (was: )

> Set parallelism for batch SQL
> -----------------------------
>
>                 Key: FLINK-12801
>                 URL: https://issues.apache.org/jira/browse/FLINK-12801
>             Project: Flink
>          Issue Type: Task
>          Components: Table SQL / Planner
>            Reporter: XuPingyong
>            Priority: Major
>              Labels: pull-request-available
>
>        DataStream user can set parallelism by SingleOutputStreamOperator#setParallelism and DataStreamSink#setParallelism. But SQL users cannot set parallelism  to operators while compiled jobGraphs from SQL are usally complex.
>        Now we first set parallelism for batch SQL by config. We introduce two resourceSetting mode:
>        InferMode.NONE:  User can set parallelism to source, sink and other nodes separately.
>        InferMode.ONLY_SOURCE： Relative to  InferMode.NONE, source paralelism can be inferred by source row count.
>         We also introduce ShuffleStage to make adjacent operatos parallelism same that there is no data shuffle between them.



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