[teiid-issues] [JBoss JIRA] (TEIID-4815) How could I debug JDV memory allocation properly

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-4815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-4815.
-----------------------------------
    Resolution: Done


Marking as done based upon the doc note.  

https://teiid.gitbooks.io/documents/content/admin/Diagnosing_Issues.html already generally describes memory issues with drivers and that heap analysis should be used when diagnosing out of memory issues.

> How could I debug JDV memory allocation properly
> ------------------------------------------------
>
>                 Key: TEIID-4815
>                 URL: https://issues.jboss.org/browse/TEIID-4815
>             Project: Teiid
>          Issue Type: Feature Request
>            Reporter: Rafael Coutinho
>            Assignee: Steven Hawkins
>         Attachments: Screenshot from 2017-03-17 17-54-24.png, Screenshot from 2017-03-17 18-14-50.png
>
>
> We hare having trouble with memory allocation on our JDV server (using Red Hat JBoss Data Virtualization - Version 6.3.0) for some reason memory gets allocated but never released.
> For simple queries memory increases just a little, however when we make complex joins etc, we are seeing scenarios with 20GB+ allocated heap. 
> I wonder if there is any inspection tool for debugging what is consuming it in JDV.
> Our main datasource is an Oracle DS, but we do have a MariaDB being used too. 



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