[jira] [Commented] (LIVY-450) Override config options by environment variables.

["Alexey Romanenko (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LIVY-450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16475633#comment-16475633 ] 

Alexey Romanenko commented on LIVY-450:
---------------------------------------

PR: [https://github.com/apache/incubator-livy/pull/94] 

> Override config options by environment variables.
> -------------------------------------------------
>
>                 Key: LIVY-450
>                 URL: https://issues.apache.org/jira/browse/LIVY-450
>             Project: Livy
>          Issue Type: Improvement
>            Reporter: Alexey Romanenko
>            Priority: Major
>
> Add a possibility to override all config options by environment variables. 
> For example:
>  {{LIVY_SPARK_MASTER}} automatically overrides {{livy.spark.master}} and {{LIVY_SPARK_DEPLOY_MODE}} overrides {{livy.spark.deploy-mode}}.
> It can be quite useful to use the same Livy image in different modes (local and cluster). 
> Any pros/cons for or against that?



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