[infinispan-issues] [JBoss JIRA] (ISPN-3604) Provide JMX operation which shows the numberOfEntries in the entire dist-cache

[Mircea Markus (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12813132#comment-12813132 ] 

Mircea Markus commented on ISPN-3604:
-------------------------------------

makes sense to me. the M/R code from the server should be reused for this operation as well.
                
> Provide JMX operation which shows the numberOfEntries in the entire dist-cache
> ------------------------------------------------------------------------------
>
>                 Key: ISPN-3604
>                 URL: https://issues.jboss.org/browse/ISPN-3604
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: JMX, reporting and management
>    Affects Versions: 6.0.0.CR1
>         Environment: Max OS-X 10.8.5, Oracle Hotspot 1.7.0_40, Infinispan 5.2.4.Final
>            Reporter: Duncan Doyle
>            Assignee: Mircea Markus
>
> The Infinispan statistics component only shows the 'numberOfEntries' in a particular node, including entries of which the node is not the primary owner (basically, doing a sum of this value of all the cluster members gives you (numberOfEntries * numOwners). The 'cache.keySet()' method does return the entire keyset, and thus you can calculate the numberOfEntries in the cache, but this requires writing custom code in a cache client. It would be nice if Infinispan would provide a JMX operation which is able to show the number of entries in the entire dist-cache cluster.

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