Joel Bernstein updated SOLR-9417:
    Attachment: SOLR-9417.patch

Added a very simple test case, which shows a daemon terminating when the 
underlying topic returns no Tuples. More to follow...

> Allow daemons to terminate
> --------------------------
>                 Key: SOLR-9417
>                 URL: https://issues.apache.org/jira/browse/SOLR-9417
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Joel Bernstein
>            Assignee: Joel Bernstein
>             Fix For: 6.3
>         Attachments: SOLR-9417.patch, SOLR-9417.patch
> The daemon expression currently runs until it's killed. This ticket will add 
> a new *terminate* parameter to the daemon expression that will allow the 
> daemon to shut itself down when it's finished processing a topic queue.
> There are a couple of small changes that need to be made to allow the daemon 
> to terminate on it's own:
> 1) The daemon will need to be passed the Map of all daemons in the /stream 
> handler. This will allow the DaemonStream to remove itself from the Map when 
> it terminates.
> 2) Logic needs to be added for the daemon to exit it's run loop if the topic 
> signals it had a zero Tuple run. The *sleepMillis* value in the EOF Tuple can 
> be used for this purpose. If sleepMillis is greater then 0 then this signals 
> a zero Tuple run.

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