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https://issues.apache.org/jira/browse/FLINK-1427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14285757#comment-14285757
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Robert Metzger commented on FLINK-1427:
---------------------------------------

How about writing a bash script which appends environment variables to the 
flink-config.yaml.
Then, you can do something like 
{code}
FLINK_TASKMANAGER_HEAP=4096 ; envToConf.sh; start-local.sh {code}

> Configuration through environment variables
> -------------------------------------------
>
>                 Key: FLINK-1427
>                 URL: https://issues.apache.org/jira/browse/FLINK-1427
>             Project: Flink
>          Issue Type: Improvement
>          Components: Local Runtime
>         Environment: Deployment
>            Reporter: Max Michels
>            Priority: Minor
>              Labels: configuration, deployment
>
> Like Hadoop or Spark, etc. Flink should support configuration via shell 
> environment variables. In cluster setups, this makes things a lot easier 
> because writing config files can be omitted. Many automation tools (e.g. 
> Google's bdutil) use (or abuse) this feature.
> For example, to set up the task manager heap size, we would run `export 
> FLINK_TASKMANAGER_HEAP=4096` before starting the task manager on a node to 
> set the heap memory size to 4096MB.
> Environment variables should overwrite the regular config entries.



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