[infinispan-issues] [JBoss JIRA] Commented: (ISPN-1188) config schema - isolationLevel attribute allows unsupported isolation modes

[Manik Surtani (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-1188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12609207#comment-12609207 ] 

Manik Surtani commented on ISPN-1188:
-------------------------------------

It should be logged that the isolation level has been upgraded or downgraded at startup, and the correct isolation level is set.  It isn't treated as an error since upgrading isolation levels is common practice with databases, and providing "greater" consistency can never be harmful to an application.  The only potential problem is downgrading, which happens if SERIALIZABLE is used.  In this case, it is logged and downgraded, but this is generally very rare since very few, if any, apps use SERIALIZABLE since it is such a large performance penalty in databases, etc.

> config schema - isolationLevel attribute allows unsupported isolation modes
> ---------------------------------------------------------------------------
>
>                 Key: ISPN-1188
>                 URL: https://issues.jboss.org/browse/ISPN-1188
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Configuration
>    Affects Versions: 5.0.0.CR5
>            Reporter: Michal Linhard
>            Assignee: Manik Surtani
>
> The configuration schema, attribute infinispan.configuration.locking.isolationLevel
> allows picking of two unsupported isolation levels
> READ_UNCOMMITTED
> SERIALIZABLE
> We don't even warn when such isolation type is used - in the code we use tests like:
> useReadCommitted = configuration.getIsolationLevel() == IsolationLevel.READ_COMMITTED;
> useRepeatableRead = configuration.getIsolationLevel() == IsolationLevel.REPEATABLE_READ;
> shouldn't we remove these from schema to avoid confusion ?

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