[infinispan-issues] [JBoss JIRA] (ISPN-3793) L1 tracks requestors for nodes that don't retrieve a value

[William Burns (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-3793?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

William Burns reassigned ISPN-3793:
-----------------------------------

    Assignee: William Burns  (was: Mircea Markus)

    
> L1 tracks requestors for nodes that don't retrieve a value
> ----------------------------------------------------------
>
>                 Key: ISPN-3793
>                 URL: https://issues.jboss.org/browse/ISPN-3793
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Cache
>    Affects Versions: 6.0.0.Final
>            Reporter: William Burns
>            Assignee: William Burns
>
> Currently we always register any non local requestor in the L1 requestors map.  This can be a performance issue with values that aren't present in the cache, since a new value put in for that value will require invalidating those nodes in addition to storing the key in memory while waiting for that.
> The easiest fix would have been to check the command invocation to see if it returns a value, however ISPN-3737 moved the registering to before the command is ran to prevent a different issue.
> Also thinking about it we could remove the requestor after the command returns, however this also has a race condition if you had data committed and the node retrieved the value concurrently.

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