Memory leak in ContentEntry.state
---------------------------------
Key: GEOT-3315
URL: http://jira.codehaus.org/browse/GEOT-3315
Project: GeoTools
Issue Type: Bug
Components: data
Environment: ESX guest Linux, Oracle JDK 1.6u22. Running transactions
against PostgreSQL 8.3. Library being used by GeoServer 2.0.1.
Reporter: Dustin Parker
Priority: Minor
Looking at a heap dump in jhat (see #3314), I noticed some of the maps
referenced by {{ContentEntry.state}} had > 6,000 entries, which doesn't make
sense (we don't do THAT much concurrent access; we try to keep to one
transaction at a time per feature type). Looking over the code again, it seems
that {{ContentEntry.state}} is added to a lot, but its entries are never
cleaned up anywhere. I looked high and low, but I couldn't find where the end
of a transaction causes its state to be cleaned from {{ContentEntry}}. The only
other possibility is that instances of {{ContentEntry}} themselves are recycled
and recreated every now and then, but I couldn't find that either
({{ContentEntry.dispose()}} is only called when the data store itself is being
disposed).
I'd like to submit a patch, but I'm not really sure where the appropriate place
to clean up the state is. Probably when the {{Transaction}} is closed, but it
would be good to get confirmation of that....
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