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From Jörn Kottmann <kottm...@gmail.com>
Subject Re: PEAR support in UIMA AS ?
Date Thu, 06 Aug 2009 21:24:45 GMT
Can we open a jira issue for adding PEAR support or is there
no interest in it ?

Jörn
>> Has IBM experience with running UIMA AS on a cluster ?
>>     
>
> We have a couple different UIMA AS clusters in operation.
> One wraps a UIMA AS service as a servlet and uses traditional
> application server infrastructures to distribute the servlet's WAR
> file, deploy the servlet, etc. The servlet is basically the
> UIMA_Service class appropriately modified to extend HttpServlet.
>
> Another approach uses an NFS file system to share
> class and jar files, prepares a process definition in the form of a
> shell script running UIMA_Service, and launches the script via ssh.
>
>   
>> My AAE resources are hosted on a http server and updated frequently. To get
>> them on the servers I use a script which downloads the resources with wget.
>> Is there a way to make UIMA AS to re-initialize the running AAE instances to
>> load the updated resources ?
>>     
>
> No, the individual services have to be stopped, updated and restarted.
> Of potential interest are changes Jerry recently made to stop UIMA AS
> services gracefully, so that they stop listening for new requests, finish
> any in progress, and then terminate. This allows doing a rolling update
> of a scaled out service without losing overall server functionality.
> Again, UIMA_Service is the class to look at for this code.
>
> Eddie
>   


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