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From Dmitriy Setrakyan <dsetrak...@apache.org>
Subject Re: Deploying code on ignite clusters
Date Mon, 27 Apr 2015 15:57:44 GMT

What kind of behavior do you need for the deployment? For example, if your
caches already have data with older classes, what should happen to that

Of course, the easiest way to accomplish what you are doing is to copy the
new jars everywhere and restart the cluster. If this approach is
acceptable, I would just go with it.


On Sun, Apr 26, 2015 at 7:29 PM, Ognen Duzlevski <ognen.duzlevski@gmail.com>

> I have a 5 machine ignite grid deployed on EC2 (still very much in testing
> but would like to move to becoming more serious about using it in research
> at least and eventually in production). In order to be able to cache
> various Scala/java classes, I created a fat jar of my Scala app and put it
> in the ignite/libs/ subdirectory. Then I start ignite on each node by
> running the ignite.sh script.
> When I add new classes, I recompile the app and create a new fat jar. How
> does one deploy this new code so that the already running ignite becomes
> aware of it? I am not much of a Java programmer (jumped straight to Scala)
> - are there any ways Java allows for loading new classes/jars "on the fly"
> into running JVMs? If so, does Ignite support them? If not, what do people
> do to deploy new jars so they can become usable to an already running cache
> grid?
> Thanks!
> Ognen

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