[infinispan-issues] [JBoss JIRA] (ISPN-1964) Preloading from store lead to doubled keys in full distributed environment

Tue May 29 05:17:18 EDT 2012

    [ https://issues.jboss.org/browse/ISPN-1964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12696668#comment-12696668 ] 

Dan Berindei commented on ISPN-1964:
------------------------------------

On the surface this issue is very similar to ISPN-1586, only that issue was about a replicated cache with a non-shared cache store and this issue is about distributed caches with a shared cache store.

The current code should work fine for shared cache stores, except we have a bug and we don't clean up the cache entries we preloaded from the cache store when we find out we're no longer the owners.

It could be improved, e.g. by only preloading on the first node (similar to the proposed solution for ISPN-1586) and receiving the data on the other nodes through state transfer, but that would be too much for a micro release.

> Preloading from store lead to doubled keys in full distributed environment
> --------------------------------------------------------------------------
>
>                 Key: ISPN-1964
>                 URL: https://issues.jboss.org/browse/ISPN-1964
>             Project: Infinispan
>          Issue Type: Bug
>    Affects Versions: 5.1.3.FINAL
>            Reporter: Marc Pellmann
>            Assignee: Manik Surtani
>            Priority: Critical
>             Fix For: 5.1.5.FINAL
>
>         Attachments: RehashAfterJoinWithPreloadTest.java
>
>
> Distributed data from shared data store with one owner. On preload there will be
> 1) double keys
> 2) not full balanced
> see for full description: https://community.jboss.org/message/726337#726337

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