[jira] Updated: (ODE-639) Memory leak in InMem DAO

["Rafal Rusin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ODE-639?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rafal Rusin updated ODE-639:
----------------------------

    Attachment: memdao-dumper.patch

Attaches is a memdao to xml dumper using xstream. 
It does a dump each 30 secs. 
I used it for diagnosing leak.

> Memory leak in InMem DAO
> ------------------------
>
>                 Key: ODE-639
>                 URL: https://issues.apache.org/jira/browse/ODE-639
>             Project: ODE
>          Issue Type: Bug
>          Components: BPEL Runtime
>    Affects Versions: 1.3.2
>         Environment: any
>            Reporter: Rafal Rusin
>            Assignee: Rafal Rusin
>         Attachments: memdao-dumper.patch
>
>
> In Memory DAO, there is a cleanup strategy, which assigns TTL 10 min. for in-memory instances. 
> I works for 1 in-memory process, but for 2 or more, there are cases when it doesn't do cleanup.
> I figured out that cleaning strategy in bpel-runtime/src/main/java/org/apache/ode/bpel/memdao/ProcessDaoImpl.java holds a static _lastRemoval field, which is updated globally. But if there are >1 in-mem processes, it may cause only one to do cleanup. 
> A simple patch, which removes static declaration solves problem, because then, cleanup is done separately for each process. 

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