[infinispan-issues] [JBoss JIRA] (ISPN-1341) Should document that FIFO as an eviction policy is deprecated

[Manik Surtani (Assigned) (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-1341?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Manik Surtani reassigned ISPN-1341:
-----------------------------------

    Assignee: Vladimir Blagojevic  (was: Manik Surtani)

    
> Should document that FIFO as an eviction policy is deprecated
> -------------------------------------------------------------
>
>                 Key: ISPN-1341
>                 URL: https://issues.jboss.org/browse/ISPN-1341
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Eviction
>    Affects Versions: 5.0.0.FINAL
>            Reporter: Jozef Vilkolak
>            Assignee: Vladimir Blagojevic
>            Priority: Minor
>              Labels: docs
>             Fix For: 5.1.0.FINAL
>
>
> When a cache is created with eviction strategy set to FIFO it is actually treated as being LRU. This can be seen in org.infinispan.container.DefaultDataContainer.java.
> Functional test for FIFO eviction can be found at [https://svn.devel.redhat.com/repos/jboss-qa/edg/edg-functional-tests/trunk/] in the eviction-strategy module.
> Basically what the test does is insert 3 values into the cache then retrieves the first value(to differentiate FIFO and LRU) and inserts 4th value which sets eviction in motion because of maxEntries=3. 
> I would expect the first entered value ("A") to be evicted instead it evicts the second ("B").
> It uses the following cache configuration:
> {code:xml}
> <local-cache 
>     name="fifo"
>     start="EAGER"
>     batching="false"
>     indexing="NONE">
>     <locking
>         isolation="REPEATABLE_READ"
>         acquire-timeout="20000"
>         concurrency-level="500"
>         striping="false" />
>     <eviction 
>         strategy="FIFO" 
>         max-entries="3" 
>         interval="2000"/>
> </local-cache>
> {code}

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