[infinispan-issues] [JBoss JIRA] (ISPN-6576) Functional API does not load values from cache loader on non-primary owners

[Krzysztof Sobolewski (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-6576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13199469#comment-13199469 ] 

Krzysztof Sobolewski commented on ISPN-6576:
--------------------------------------------

Yes, that's the problem. I assume the idea of this API is that the function is replicated to all the owners (primary and backup) and executed there, modifying the local value, without the need to replicate the result (or, actually, to *avoid* the replication of final values). That way I can achieve what deltas would do - the function is the delta, in other words.

> Functional API does not load values from cache loader on non-primary owners
> ---------------------------------------------------------------------------
>
>                 Key: ISPN-6576
>                 URL: https://issues.jboss.org/browse/ISPN-6576
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 8.2.1.Final
>            Reporter: Krzysztof Sobolewski
>         Attachments: AbstractFunctionalCachestoreTest.java, AbstractFunctionalCachestoreTest.java, FunctionalCachestoreTestNonTx.java, FunctionalCachestoreTestTx.java
>
>
> We have a cluster in DIST mode with numOwners > 1, so there are primary and secondary owners, with persistence enabled. When I do a read-write operation on the cluster using the Functional API on a key that is present in the cache loader, the entry that gets passed to the functional operation has a non-null value only for the primary owner. See:
> org.infinispan.interceptors.ClusteredCacheLoaderInterceptor.skipLoadForWriteCommand()
> line 53.
> This is using non-transactional cache.
> NOTE: The attached tests are modified version of the ones in ISPN-6573.



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