[infinispan-dev] ApplyDeltaCommand: question about affected keys

[Randall Hauch]

Actually, it is both, depending upon the situation.

When a new process is started and joins the cluster, the new process will via state transfer receive its entries as externalized whole values, not deltas. However, from that point forward, I believe that all changes to a DeltaAware entry will be sent to other processes in the cluster via the delta.

This is fairly obvious if you think about it.

On Jan 24, 2013, at 11:42 AM, Vladimir Blagojevic <vblagoje at redhat.com> wrote:

> Should be just the deltas. That was the whole point after all :-)
> 
> Regards,
> Vladimir
> On 13-01-24 12:19 PM, Ray Tsang wrote:
>> Ah that explains it!
>> 
>> Btw - after the delta, in replicated/distributed cache, does it send over the whole object or just the deltas?  I'm assuming the former.
>> 
>> Thanks!
>> 
>> On Thu, Jan 24, 2013 at 4:04 AM, Manik Surtani <manik at jboss.org> wrote:
>> Sorry, I misread the question - the link below shows how Deltas are applied when a delta is shipped around as a part of a put().  If you are explicitly using the ApplyDeltaCommand, this is Vlad's code and he should know.
>> 
>> I could trace through usage in my IDE but then so could anybody - Vlad, do you have any specific insight to add here?
>> 
>> Cheers
>> Manik
>> 
>> On 24 Jan 2013, at 12:01, Manik Surtani <manik at jboss.org> wrote:
>> 
>> > I believe this is what you guys are looking for.
>> >
>> > https://github.com/infinispan/infinispan/blob/master/core/src/main/java/org/infinispan/commands/write/PutKeyValueCommand.java#L100
>> >
>> >
>> > On 23 Jan 2013, at 21:02, Vladimir Blagojevic <vblagoje at redhat.com> wrote:
>> >
>> >> On 13-01-23 3:36 PM, Ray Tsang wrote:
>> >>> speaking of ApplyDeltaCommand - where does it actually perform the
>> >>> delta operation?  perform() simply returns null.  Any pointers?
>> >>>
>> >>> Thanks,
>> >> Look for use of ApplyDeltaCommand class in IDE (in Eclipse highlight
>> >> class name + right click + References->Workspace)
>> >> Current uses I found are in EntryWrappingInterceptor,
>> >> OptimisticLockingInterceptor and so on....
>> >>
>> >> Regards,
>> >> Vladimir
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>> >
>> > --
>> > Manik Surtani
>> > manik at jboss.org
>> > twitter.com/maniksurtani
>> >
>> > Platform Architect, JBoss Data Grid
>> > http://red.ht/data-grid
>> >
>> >
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>> 
>> --
>> Manik Surtani
>> manik at jboss.org
>> twitter.com/maniksurtani
>> 
>> Platform Architect, JBoss Data Grid
>> http://red.ht/data-grid
>> 
>> 
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