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From "Patrick Linskey (JIRA)" <j...@apache.org>
Subject [jira] Updated: (OPENJPA-71) Caching primitive array types consumes excessive memory
Date Thu, 01 Mar 2007 01:22:50 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-71?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Linskey updated OPENJPA-71:
-----------------------------------

    Fix Version/s: 0.9.7

What happens if openjpa.DynamicDataStructs is enabled?

> Caching primitive array types consumes excessive memory
> -------------------------------------------------------
>
>                 Key: OPENJPA-71
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-71
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: datacache
>            Reporter: Roger Keays
>             Fix For: 0.9.7
>
>
> As reported on the mailing list: http://www.nabble.com/cached-byte---consumes-excessive-memory-tf2543098.html
, in org.apache.openjpa.AbstractPCData#toData() an ArrayList is used to cache all types of
arrays, including arrays of primitives. This can use excessively large amounts of memory because
of the wrappers required for each element in the array. In one test case, a 7MB byte[] consumed
127MB when converted to a cached ArrayList.
> AbstractPCData needs to be fixed to handle simple arrays.

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