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https://issues.apache.org/jira/browse/JENA-352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13618141#comment-13618141
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Hudson commented on JENA-352:
-----------------------------
Integrated in Jena__Development_Test #576 (See
[https://builds.apache.org/job/Jena__Development_Test/576/])
JENA-352 : Produce blank node ids based on large randon seed and the
per-parser-run label. (Revision 1462840)
Result = SUCCESS
andy :
Files :
*
/jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/lang/BlankNodeAllocator.java
*
/jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/lang/BlankNodeAllocatorHash.java
*
/jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/lang/BlankNodeAllocatorTraditional.java
* /jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/lang/LabelToNode.java
* /jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/out/NodeToLabel.java
*
/jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/system/MapWithScope.java
* /jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/system/RiotLib.java
*
/jena/trunk/jena-arq/src/main/java/org/apache/jena/riot/system/SyntaxLabels.java
* /jena/trunk/jena-arq/src/test/java/org/apache/jena/riot/lang/TS_Lang.java
*
/jena/trunk/jena-arq/src/test/java/org/apache/jena/riot/lang/TestBlankNodeAllocator.java
*
/jena/trunk/jena-arq/src/test/java/org/apache/jena/riot/lang/TestLabelToNode.java
*
/jena/trunk/jena-arq/src/test/java/org/apache/jena/riot/lang/TestNodeToLabel.java
> Vast numbers of bNodes can overwhelm the parser
> -----------------------------------------------
>
> Key: JENA-352
> URL: https://issues.apache.org/jira/browse/JENA-352
> Project: Apache Jena
> Issue Type: Bug
> Components: RIOT, TDB
> Reporter: Andy Seaborne
> Assignee: Andy Seaborne
> Priority: Minor
> Fix For: Jena 2.10.1
>
>
> The parsers need to keep a bNode label to bNode map which (unusual data) can
> grow too large. As it takes unusual data, rated as "minor".
> outline of solution:
> 1/ switch to a bNode allocation scheme which has a seed (a large random
> number per parser run), and concat or XOR with the claimed bNode label to
> generate a unique label without state build up.
> 2/ (Turtle) don't remember [] bnodes past their usage scope.
> 3/ Partial - keep a sliding window of bNodes label mappings
> 4/ Direct allocation for _:label and tracked allocation for []
> e.g.
> http://mail-archives.apache.org/mod_mbox/jena-users/201112.mbox/%[email protected]%3E
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