[infinispan-issues] [JBoss JIRA] (ISPN-3048) Eviction needs to be transactional

[Paul Ferraro (JIRA)]

Paul Ferraro created ISPN-3048:
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             Summary: Eviction needs to be transactional
                 Key: ISPN-3048
                 URL: https://issues.jboss.org/browse/ISPN-3048
             Project: Infinispan
          Issue Type: Bug
          Components: Eviction
    Affects Versions: 5.3.0.Alpha1
            Reporter: Paul Ferraro
            Assignee: Mircea Markus
            Priority: Critical


Currently, Infinispan eviction is non-transactional.  This makes Infinispan's eviction manager virtually unusable, since non-transactional eviction can cause phantom reads and data loss because it violates the isolation of concurrent transactions.  This is especially problematic when using a passivation-enabled cache store.  In this case, a cache eviction/passivation can cause a concurrently executed cache retrieval to return null - even though the act of passivation does not change the data - it only changes where it is stored.
We work around this in the AS by performing eviction manually, using pessimistic locking in combination with eager lock acquisition prior to eviction.  This is unfortunate, since it prevents me from leveraging Infinispan's build-in eviction strategies.

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