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https://issues.apache.org/jira/browse/JENA-44?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13092123#comment-13092123
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Stephen Allen commented on JENA-44:
-----------------------------------
If we wanted to add support, I don't think it would be too difficult if we
wanted to cancel during tuple serialization.
However, I'm not sure if we can do much during the Array.sort(). Does
Thread.interrupt() cancel that method? If so, how would we get a handle to the
proper thread/threads (need to be careful about lock contention if registering
them somewhere)?
> Support external sorting of bindings in ARQ
> -------------------------------------------
>
> Key: JENA-44
> URL: https://issues.apache.org/jira/browse/JENA-44
> Project: Jena
> Issue Type: New Feature
> Components: ARQ
> Reporter: Sam Tunnicliffe
> Assignee: Paolo Castagna
> Priority: Minor
> Attachments: JENA-44-0.patch,
> JENA-44-Depends-on-JENA-99-r1157891.patch, JENA-44_ARQ_r1156212.patch,
> JENA-44_ARQ_r8531.patch, JENA-44_ARQ_r8724.patch
>
>
> In QueryIterSort, the sorting of the contents of an Iterator<Binding> is done
> in memory, using Arrays.sort. This can be problematic where the set to be
> sorted is large. A possible solution could be to use an external, disk-backed
> algorithm. A hybrid approach may be better, whereby we attempt the in-memory
> sort, but when the number of bindings encountered goes over a certain number,
> resort to the disk-backed variant.
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