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From Denis Magda <dma...@gridgain.com>
Subject Re: Migrating From Hazelcast Service Interface To Apache Ignite Service Interface
Date Fri, 24 Jun 2016 05:12:50 GMT
Hi Gareth,

To control data location/disposal you need to write your own AffinityFunction (just refer
to this interface). Using AffinityFunction you can select a range of nodes that will hold
primary replicas and a range of nodes that will be stored the rest of data.

Probably even more simple scenario that may work for you is to store primary data (primary
replica) in a particular cache and use CacheConfiguration.nodeFilter for cache deployment
on particular nodes only. The same can be done for summary data if to place it in a separate
cache as well.


> On Jun 23, 2016, at 2:50 AM, gcollins <gareth.o.collins@gmail.com> wrote:
> e.g. what to store on the primary and secondary replica. On the 
> primary replica the full data will be there, on the secondary replica 
> only summary data will be stored (as well as cached query results). 
> My internal memory structure included big byte array blobs (or 
> off-heap memory blobs) which I will be appending to via an insert as 
> well as separate dictionaries to make sense of the binary blobs during 
> queries. 
> thanks, 
> Gareth 
> On Tue, Feb 16, 2016 at 4:07 PM, vkulichenko [via Apache Ignite Users] 
> <[hidden email] <x-msg://30/user/SendEmail.jtp?type=node&node=5812&i=0>>
> > Hi Gareth, 
> > 
> > gcollins wrote 
> > I guess the SpiQuery can help me part of the way potentially, but it 
> > doesn't give me the control to manage internal memory structure, 
> > replication, custom persistence etc. 
> > 
> > What kind of control do you expect? Can you give an example? In general, 
> > almost everything in Ignite is customizable and pluggable. E.g., to 
> > customize backup node assignments you can implement your own 
> > AffinityFunction, for custom persistence implement CacheStore interface. 
> > 
> > Can you clarify what you mean by "internal memory structure"? Can you create 
> > an Ignite cache (or caches) under the hood and provide your own APIs and/or 
> > services around it? 
> > 
> > -Val 
> > 
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> > NAML 
> View this message in context: Re: Migrating From Hazelcast Service Interface To Apache
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