[infinispan-issues] [JBoss JIRA] Commented: (ISPN-359) Provide mechanism for users to control data locality when using DIST

[Vladimir Ralev (JIRA)]

    [ https://jira.jboss.org/jira/browse/ISPN-359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12524657#action_12524657 ] 

Vladimir Ralev commented on ISPN-359:
-------------------------------------

Would it be possible to make this feature work with buddy replication in cooperation with mod_cluster? For example you have node1,node2,node3,node4. Session A is on node1 and node2. When node1 fails it would be best mod_cluster to hit deterministically node2 instead of the other nodes. I remember I have seen hints that Infinispan is looking into rehashing or rebalancing, but I am not sure how smart is the algorithm and is it working cooperatively with mod_cluster?

> Provide mechanism for users to control data locality when using DIST
> --------------------------------------------------------------------
>
>                 Key: ISPN-359
>                 URL: https://jira.jboss.org/jira/browse/ISPN-359
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Distributed Cache
>    Affects Versions: 4.0.0.Final
>            Reporter: Tero Heinonen
>            Assignee: Manik Surtani
>             Fix For: 4.1.0.BETA1
>
>
> Programmable affinity either through:
>  
> 1) statically (e.g. annotating a certain field as the key for consistent hashing)
> - in our case this cannot be based on the hashCode() as the affinity requirement and object identity are not directly related
>  
> 2) dynamically (e.g. providing a overridable/annotatable consistentHashCode() function)
>  
> This would help to assign entities (in multiple Caches), which are needed together in the same nodes (to avoid remote lookups)

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