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From Konstantin Boudnik <...@apache.org>
Subject Re: A few questions
Date Fri, 17 Apr 2015 00:00:23 GMT
Alexey,

all email exchanges on this list are archived and, in fact, for that very
reason, so people can find the answers lately. I don't think we should be
redirecting ppl to an external forum.

Cos

On Thu, Apr 16, 2015 at 09:35PM, Alexey Kuznetsov wrote:
> Ognen, you could ask such questions here:
> http://apacheignite.readme.io/v1.0/discuss
> Also you can read documentation here:
> http://apacheignite.readme.io/v1.0/docs
> And try to play with examples first.
> 
> On Thu, Apr 16, 2015 at 9:01 PM, Ognen Duzlevski <ognen.duzlevski@gmail.com>
> wrote:
> 
> > Hello all,
> >
> > I have a few questions as I am starting to play with Ignite in Scala:
> >
> > 1. It seems like every time I want to obtain a reference to a cache, I
> > actually "join or create a grid" with a full fledged JVM/CPU-set/dedicated
> > heap - is this observation correct? Is there a way to just use Ignite as a
> > "library" - I make a call, get a reference to a cache and execute puts and
> > gets. Or am I completely missing the point?
> >
> > 2. I am trying to create an Akka actor system where an actor commits some
> > data to a cache upon receiving a message. I already have a grid running and
> > it seems like I am able to join that local grid to use the named cache
> > (appropriately named "testCache"). Below is the output of what is happening
> > - am not sure what exactly the error message means - is it some kind of a
> > serialization issue? I am running my example from sbt - do I need to create
> > a fat jar and run/deploy that in order to make the failing class available?
> >
> > [08:12:06] Topology snapshot [ver=15, nodes=1, CPUs=8, heap=1.0GB]
> > [08:39:07] Topology snapshot [ver=16, nodes=2, CPUs=8, heap=2.3GB]
> > [08:39:08,582][SEVERE][ignite-#23%sys-null%][GridCacheIoManager] Failed to
> > process message (note that distributed services do not support peer class
> > loading, if you deploy distributed service you should have all required
> > classes in CLASSPATH on all nodes in topology)
> > [senderId=5e9a1002-76de-495a-8244-8ca337907f72, err=Failed to load class
> > [name=com.shoutlet.datascience.socialnetworkpollers.CacheGenderData,
> > ctx={1785472cc41-5e9a1002-76de-495a-8244-8ca337907f72=CachedDeploymentInfo
> > [sndId=5e9a1002-76de-495a-8244-8ca337907f72,
> > ldrId=1785472cc41-5e9a1002-76de-495a-8244-8ca337907f72, userVer=0,
> > depMode=SHARED, participants=null]}]]
> > [08:39:30] Topology snapshot [ver=17, nodes=1, CPUs=8, heap=1.0GB]
> > [08:39:30]
> > [08:39:30] Cleared all cache entries for undeployed class loader for cache:
> > default
> > [08:39:30]   ^-- Cache auto-undeployment happens in SHARED deployment mode
> > (to turn off, switch to CONTINUOUS mode)
> > [08:39:30]
> > [08:39:30]
> > [08:39:30] Cleared all cache entries for undeployed class loader for cache:
> > testCache
> > [08:39:30]   ^-- Cache auto-undeployment happens in SHARED deployment mode
> > (to turn off, switch to CONTINUOUS mode)
> > [08:39:30]
> > [08:47:50] Topology snapshot [ver=18, nodes=2, CPUs=8, heap=2.3GB]
> > [08:47:53,788][SEVERE][ignite-#32%sys-null%][GridCacheIoManager] Failed to
> > process message (note that distributed services do not support peer class
> > loading, if you deploy distributed service you should have all required
> > classes in CLASSPATH on all nodes in topology)
> > [senderId=78ec49fd-bb7b-44b8-a618-0b2b0ed6584c, err=Failed to load class
> > [name=com.shoutlet.datascience.socialnetworkpollers.CacheGenderData,
> > ctx={7235c72cc41-78ec49fd-bb7b-44b8-a618-0b2b0ed6584c=CachedDeploymentInfo
> > [sndId=78ec49fd-bb7b-44b8-a618-0b2b0ed6584c,
> > ldrId=7235c72cc41-78ec49fd-bb7b-44b8-a618-0b2b0ed6584c, userVer=0,
> > depMode=SHARED, participants=null]}]]
> > [08:48:48] Topology snapshot [ver=19, nodes=1, CPUs=8, heap=1.0GB]
> >
> > 3. Is there a user list where people can ask questions like the above? This
> > is dev list and this email may not necessarily fall under that
> > classification. I know there is "Ask a question" on the web site but it is
> > rather inconvenient and does not compare to a mailing list :)
> >
> > Thanks!
> >
> 
> 
> 
> -- 
> Alexey Kuznetsov
> GridGain Systems
> www.gridgain.com

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