[jira] [Commented] (KNOX-522) Admin Service API for Stopping the Gateway

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

    [ https://issues.apache.org/jira/browse/KNOX-522?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14377726#comment-14377726 ] 

Larry McCay commented on KNOX-522:
----------------------------------

Requires:

* Configurable grace period and options set on server initialization
* Jersey Resource for Stop and maybe Restart


> Admin Service API for Stopping the Gateway
> ------------------------------------------
>
>                 Key: KNOX-522
>                 URL: https://issues.apache.org/jira/browse/KNOX-522
>             Project: Apache Knox
>          Issue Type: Improvement
>          Components: Server
>            Reporter: Larry McCay
>
> We need to add a graceful way to shutdown the server that allows existing requests to complete but doesn't accept to connections before it actually stops.
> See the embedded Jetty APIs for setting the options:
>       server.setGracefulShutdown(millis);
>       server.setStopAtShutdown(true);
> The millis provided in the setGracefulShutdown indicates the graceperiod to allow existing requests to complete before killing them.
> The setStopAtShutdown boolean enables or disables the grace period.
> This improvement will be useful in rolling upgrade scenarios where a number of instances are running and we want to cycle one after another without disrupting requests being processed.



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