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From "Roger Keays (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-71) Caching primitive array types consumes excessive memory
Date Tue, 31 Oct 2006 01:08:16 GMT
Caching primitive array types consumes excessive memory
-------------------------------------------------------

                 Key: OPENJPA-71
                 URL: http://issues.apache.org/jira/browse/OPENJPA-71
             Project: OpenJPA
          Issue Type: Bug
          Components: datacache
            Reporter: Roger Keays


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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