[jira] [Commented] (FLUME-849) Configuration changes can not remove already configured components

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

    [ https://issues.apache.org/jira/browse/FLUME-849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15880850#comment-15880850 ] 

bharat commented on FLUME-849:
------------------------------

I was playing around with this one, when the user remove source1 and add source 2 both of them are not started and source 1 is actually stopped. The way new configuration changes are applied is that:
1. stop all components on the existing configuration
2. now set the new configuration
3. start all components (this will work on new configuration)

source/sink/channel have stop time != 0 in case it was removed. 

Although I am not sure if a source/sink/channel is added again then existing channel is restarted or a new one is created. 

> Configuration changes can not remove already configured components
> ------------------------------------------------------------------
>
>                 Key: FLUME-849
>                 URL: https://issues.apache.org/jira/browse/FLUME-849
>             Project: Flume
>          Issue Type: Bug
>          Components: Configuration
>    Affects Versions: NG alpha 1
>            Reporter: E. Sammer
>
> When Flume receives a configuration change event (via onConfigurationChange()) it can not detect the removal of configuration.
> For instance, if source 1 is configured and the user removes source 1 and adds source 2 Flume will now have both started rather than just source 2.



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