[infinispan-issues] [JBoss JIRA] (ISPN-11249) Unexpected functionality added by Java8 default interface methods

[Will Burns (Jira)]

     [ https://issues.redhat.com/browse/ISPN-11249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Will Burns updated ISPN-11249:
------------------------------
    Git Pull Request: https://github.com/infinispan/infinispan/pull/7921, https://github.com/infinispan/infinispan/pull/7941  (was: https://github.com/infinispan/infinispan/pull/7921)


> Unexpected functionality added by Java8 default interface methods
> -----------------------------------------------------------------
>
>                 Key: ISPN-11249
>                 URL: https://issues.redhat.com/browse/ISPN-11249
>             Project: Infinispan
>          Issue Type: Bug
>            Reporter: Wolf-Dieter Fink
>            Assignee: Will Burns
>            Priority: Critical
>             Fix For: 10.1.3.Final, 11.0.0.Alpha2
>
>
> With Java8 there are interfaces which implement default methods.
> Those defaults are available if not overridden, but the function behind might not be correct because the method was not meant to be implemented.
> There are issues with the transaction and locking because of the remote invocation, so the conditional operation will not work consistent.
> Such methods need to be checked and throw a UnsupportedOperation.
> This appears for the compute(...) methods
> compute(key, BiFunct) -> default to java.util.concurrent.ConcurrentMap interface
> compute() methods with expiration will throw an UnsupportedOperationException as expected.



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