[infinispan-issues] [JBoss JIRA] (ISPN-3311) Unmarshalling error switching from 5.2 to 5.3

[Galder Zamarreño (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12790925#comment-12790925 ] 

Galder Zamarreño commented on ISPN-3311:
----------------------------------------

The problem is due the work I did to reduce the per-entry overhead in Infinispan (ISPN-3144). In 5.2.x an earlier, a cache entry stored the key and an instance of InternalCacheValue and serialized those two. In 5.3.x, that InternalCacheValue wrapper is gone, so we just keep a reference to the key and value, without the wrapper. We create InternalCacheValue instances on the fly when needed. When it comes to serializing, it changed so that the value was serialized directly, instead of the InternalCacheValue which then serialized the value itself.

I'm checking if there's a way to somehow support both ways.
                
> Unmarshalling error switching from 5.2 to 5.3
> ---------------------------------------------
>
>                 Key: ISPN-3311
>                 URL: https://issues.jboss.org/browse/ISPN-3311
>             Project: Infinispan
>          Issue Type: Bug
>    Affects Versions: 5.3.0.Final
>            Reporter: Galder Zamarreño
>            Assignee: Galder Zamarreño
>             Fix For: 6.0.0.Alpha2, 6.0.0.Final
>
>
> Error:
> {code}Caused by: org.infinispan.CacheException: Type of data read is
> unknown. Id=-2147482348 is not amongst known reader indexes.
> at org.infinispan.marshall.jboss.ExternalizerTable.readObject(ExternalizerTable.java:222){code}
> Full stacktrace: https://gist.github.com/galderz/770679223e02f5b211f8

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