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

[Duncan Doyle (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-3604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12813806#comment-12813806 ] 

Duncan Doyle commented on ISPN-3604:
------------------------------------

Idea is to refactor 'org.infinispan.tasks.GlobalKeySetTask'. That implementation currently does not take entries in the CacheLoader into account. So I want to change that implementation to use the implementation of 'org.infinispan.server.hotrod.util.BulkUtil' and make the HotRod server use the GlobalKeySetTask.

I want to implement the JMX operation on the 'org.infinispan.CacheImpl', as the 'org.infinispan.interceptors.CacheMgmtInterceptor' is not really the correct place for it (first of all, it is not data that is collected via an interceptor (i.e., we use a Map/Reduce function), second the data is not really statistics data (i.e. it's the current global number of keys in the grid), third I don't actually have access to the Cache object in the interceptor code ....).

Any comments?
                
> 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.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira