[jira] [Created] (JENA-985) Iterate using Apache Jena ExtendedIterator on Graph with big amount of triples

["Eugene Tenkaev (JIRA)" <ji...@apache.org>]

Eugene Tenkaev created JENA-985:
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             Summary: Iterate using Apache Jena ExtendedIterator on Graph with big amount of triples
                 Key: JENA-985
                 URL: https://issues.apache.org/jira/browse/JENA-985
             Project: Apache Jena
          Issue Type: Bug
          Components: Core
    Affects Versions: Jena 2.13.0
         Environment: *Hardware*
Windows 7 64-bit
Intel Core i7 4785T @ 2.20GHz
RAM 16,0GB DDR3
465GB Samsung SSD 850 EVO 500G SCSI Disk Device (SSD)

*Software environment*
java version "1.7.0_75"
Java(TM) SE Runtime Environment (build 1.7.0_75-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.75-b04, mixed mode)

*Running options*
VM options: -Xmx14g
            Reporter: Eugene Tenkaev
            Priority: Minor


I'm generating Apache Jena Graph from DBpedia dumps and now I want iterate through all "dbpedia-owl:abstract".
So I do something like this:

{code:java}
    ExtendedIterator<Triple> iterator = Graph.find(Node.ANY, NodeFactory.createURI("dbpedia-owl:abstract"), Node.ANY);
{code}

But then I try to iterate, memory consumption is increased, so looks like "ExtendedIterator" store found nodes.
I use VisualVM profiler and found that while I iterate, count of "com.hp.hpl.jena.graph.Node_URI" is increasing.
I try to do "iterator.reset()" but this takes no effect.

Is this bug or feature?:D

Can I iterate through all DBpedia abstracts without storing nodes?

Sorry for my bad english.



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