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https://issues.apache.org/jira/browse/METRON-1167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16159425#comment-16159425
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ASF GitHub Bot commented on METRON-1167:
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Github user nickwallen commented on the issue:
https://github.com/apache/metron/pull/740
> so, what happens if we modify a field via %define from a stellar shell
started with -z ?
If you loaded GLOBAL_CONFIG with -z, then `%define`'d the same value, that
value would get overridden in the current REPL session only. It does not
change anything in Zk. If you restarted your REPL, then the value would go
back to what is in Zk.
> Define Session Specific Global Configuration Values in the REPL
> ---------------------------------------------------------------
>
> Key: METRON-1167
> URL: https://issues.apache.org/jira/browse/METRON-1167
> Project: Metron
> Issue Type: Improvement
> Affects Versions: 0.4.0
> Reporter: Nick Allen
> Assignee: Nick Allen
>
> Many Stellar functions accept configuration values from the Global
> configuration. When using the REPL you can load the global configuration
> values by launching the REPL with the -z option, which loads the global
> configuration stored in Zookeeper.
> The only way to modify the global configuration within the REPL currently is
> to do the following steps.
> 1. Retrieve the global configuration with conf := CONFIG_GET("global")
> 2. Alter that global configuration by modifying the JSON contained in the
> `conf` variable.
> 3. Push the new global configuration using CONFIG_PUT("global", conf)
> 4. Close and then reopen the REPL. Without restarting the REPL the new
> global configuration is not loaded.
> I want a way to do this directly in the REPL, without restarting it, and also
> in a way that does not modify the persisted global configuration in
> Zookeeper. I may be monkeying with something the REPL, but I don't want to
> break one of my live Metron topologies.
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