[Building Sakai] Preventing ScheduledInvocationRunner from running on a node

[Thomas, Gregory J]

I attached 2 patch files to https://jira.sakaiproject.org/browse/SAK-23415

One is for adding the properties (commented out) to
default.sakai.properties in config.  The other is for the actual code
changes in scheduler.

Thanks,
Greg

On 3/26/13 11:08 AM, "Thomas, Gregory J" <gjthomas at iupui.edu> wrote:

>I'll try to get IU's version of this before the end of the day.
>
>They're really two separate changes, but I'll combine it into one for the
>patch.
>
>1. In sakai.properties (or whatever properties file you want to use)
>you'll configure how many servers and specify which ones you want to allow
>to run quartz jobs on your cluster, e.g.
>
>## property to enable quartz only on a select number of servers ##
>quartz.serverId.count=2
>quartz.serverId.1=nameofoneofyourservers
>quartz.serverId.2=nameofoneofyour2ndserver
>
>
>2. Building off of this functionality, the 2nd fix only allows servers
>defined in the above property to register the ScheduledInvocationRunner
>job on startup, and I think there was some logic added to prevent
>duplication.  One of the issues at IU we had in production is our 12
>server cluster would repeatedly unregister and sometimes register
>ScheduledInvocationRunner.  Since the servers start up in roughly the same
>timeframe, this caused issues with this process.  If the job isn't there,
>email notifications are not sent out when they're suppose be sent out.  IU
>currently allows just one server on our cluster to be the "quartz server".
>
>We've had both of these in our production environment for at least 1 year
>(maybe 2-3).
>
>I'll send an email when the patch is ready.
>
>Thanks,
>Greg
>
>
>
>On 3/25/13 1:32 PM, "Seth Theriault" <slt at columbia.edu> wrote:
>
>>On Mon, Mar 25, 2013 at 1:05 PM, Maurer, Christopher Wayne
>><chmaurer at iupui.edu> wrote:
>>> I'll see if we can get a patch together sooner rather than later.
>>
>>I have opened a Jira for this:
>>
>>https://jira.sakaiproject.org/browse/SAK-23415
>>
>>David Adams's original patch is attached there for reference.
>>
>>Seth
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