[jira] [Commented] (FLINK-18161) Changing parallelism is not possible in sql-client.sh

["Dawid Wysakowicz (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-18161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17126788#comment-17126788 ] 

Dawid Wysakowicz commented on FLINK-18161:
------------------------------------------

The problem is that the command will result in setting the parallelism directly on the underlying StreamExecutionEnvironment/BatchExecutionEnvironment. 

At the same time the {{TableConfig}} is populated with a {{Configuration}} ({{LocalExecutor#flinkConfig}}) populated from the {{GlobalConfiguration}} which sets the {{parallelism.default}}.
This setting always overwrites the parallelism of the {{StreamExecutionEnvironment}}

The flow is as follows:
1. We set value of {{execution.parallelism}} through {{StreamExecutionEnvironment#setParallelism}}
2. We set value of {{parallelism.default}} from TableConfig#configuration on {{StreamExecutionEnvironment}} effectively overwriting the previous setting.

> Changing parallelism is not possible in sql-client.sh
> -----------------------------------------------------
>
>                 Key: FLINK-18161
>                 URL: https://issues.apache.org/jira/browse/FLINK-18161
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / Client
>    Affects Versions: 1.11.0
>            Reporter: Robert Metzger
>            Priority: Critical
>
> I tried using 
> {code}
> SET execution.parallelism=12
> {code}
> and changing the parallelism in the configuration file.
> My SQL queries were always running with p=1 for all operators.



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