[teiid-issues] [JBoss JIRA] (TEIID-2086) Local result set cache is not transactionally consistent

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-2086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-2086.
-----------------------------------

    Resolution: Done


This was slightly more complicated than I had hoped.  In the AS environment the caches are treated as services, not just the cache container.  So without an explicit dependency on the cache service just getting a cache from the container would automatically start a defaultly configured cache.

So now there are explicit service dependencies and we use the embedded manager to ensure that we don't auto create an inappropriately configured cache.
                
> Local result set cache is not transactionally consistent
> --------------------------------------------------------
>
>                 Key: TEIID-2086
>                 URL: https://issues.jboss.org/browse/TEIID-2086
>             Project: Teiid
>          Issue Type: Quality Risk
>          Components: Query Engine
>    Affects Versions: 7.0
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 8.2
>
>         Attachments: txn_cache.patch
>
>
> Local result set cache entries are stored in a DefaultCache instance, which has no notion of on-going transactions.  This makes session or less deterministic entries read uncommitted and possibly invalid if populated during a roll-back scenario.
> We should either add transaction aware logic or switch the local cache to a memory based infinispan instance.

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