[infinispan-issues] [JBoss JIRA] (ISPN-6405) Persistence configuration with clustered cache can cause duplicate expiration messages

[William Burns (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-6405?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13179409#comment-13179409 ] 

William Burns commented on ISPN-6405:
-------------------------------------

I figured out the core issue here.  The problem is that due to the in memory expiration being asynchronous, this completes and creates a bunch of asynchronous expiration requests.  It then proceeds to process the store synchronously.  It is then possible for the store to read the entry and attempt to remove it after the asynchronous thread has since completed (thus getting 2 notifications).  The true fix is thus to make the processExpiration for in memory entries to be synchronous.  And to be honest this fix is a lot better since before we could spin up and keep all async threads busy if there are enough expired in memory entries which is what we don't want.

> Persistence configuration with clustered cache can cause duplicate expiration messages
> --------------------------------------------------------------------------------------
>
>                 Key: ISPN-6405
>                 URL: https://issues.jboss.org/browse/ISPN-6405
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Expiration
>            Reporter: William Burns
>            Assignee: William Burns
>
> It seems that some configuration of persistence causes the entry to be expired twice when it should have only expired once.



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