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Date: Mon, 17 Jan 2011 15:33:44 -0500 (EST)
From: =?utf-8?Q?Reto_Bachmann-Gm=C3=BCr_=28JIRA=29?= <jira@apache.org>
To: clerezza-dev@incubator.apache.org
Subject: [jira] Commented: (CLEREZZA-395) bnodes mapping in JenaGraphAdaptor
 should not keep growing with every parsing of rdf files
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    [ https://issues.apache.org/jira/browse/CLEREZZA-395?page=3Dcom.atlassi=
an.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=3D12=
982852#action_12982852 ]=20

Reto Bachmann-Gm=C3=BCr commented on CLEREZZA-395:
---------------------------------------------

Today I commit a change to the jena adapter so that existing bnodes or bnod=
es produced by jena-parsers no longer cause an entry in the bidi-map. Anoth=
er improvement that should be done is to keep only weak references in the b=
idimap and discard map entries once the BNode-instances are no longer refer=
enced.

> bnodes mapping in JenaGraphAdaptor should not keep growing with every par=
sing of rdf files
> -------------------------------------------------------------------------=
-----------------
>
>                 Key: CLEREZZA-395
>                 URL: https://issues.apache.org/jira/browse/CLEREZZA-395
>             Project: Clerezza
>          Issue Type: Improvement
>            Reporter: Hasan
>            Assignee: Hasan
>
> With every parsing of rdf files free memory is getting less.
> The problem seems to lie in the JenaGraphAdaptor class
> It has a member:
> final BidiMap<BNode, Node> tria2JenaBNodes =3D new BidiMapImpl<BNode, Nod=
e>();
> which grows each time a serialized graph get parsed.
> My experiments with my test data show
> At the end of the 1st parsing: Size of tria2JenaBNodes =3D 87200
> At the end of the 2nd parsing: Size of tria2JenaBNodes =3D 130800
> At the end of the 3rd parsing: Size of tria2JenaBNodes =3D 174400

--=20
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