[jira] Updated: (CLEREZZA-395) bnodes mapping in JenaGraphAdaptor should not keep growing with every parsing of rdf files

["Tsuyoshi Ito (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CLEREZZA-395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tsuyoshi Ito updated CLEREZZA-395:
----------------------------------

    Comment: was deleted

(was: Is that not problematic to invoke tria2JenaBNodes.clear(); in the clear method?

what happens if applications use references to these bnodes while clear is invoked?
)

> bnodes mapping in JenaGraphAdaptor should not keep growing with every parsing 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 = new BidiMapImpl<BNode, Node>();
> 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 = 87200
> At the end of the 2nd parsing: Size of tria2JenaBNodes = 130800
> At the end of the 3rd parsing: Size of tria2JenaBNodes = 174400

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