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From "Stephen Allen (JIRA)" <>
Subject [jira] Commented: (JENA-45) Spill to disk SPARQL Update
Date Thu, 10 Feb 2011 20:14:58 GMT


Stephen Allen commented on JENA-45:

I don't know when a committer will get a chance to look at the patch, so I don't know if I
can answer your question with authority.  That being said, I've corresponded with Andy about
the design (see link in issue description) and I believe I've implemented the feature according
to his inputs, so hopefully there wouldn't have to be too many changes to commit it to the
main project. 

The one area that needs changes (and was hoping to leave to Andy) was specifying the temporary
directory and threshold via a configuration file.

> Spill to disk SPARQL Update
> ---------------------------
>                 Key: JENA-45
>                 URL:
>             Project: Jena
>          Issue Type: New Feature
>          Components: ARQ
>            Reporter: Stephen Allen
>         Attachments: ARQ-Disk-Backed-Updates-r8504.patch
> Attached is a patch that implements a spill-to-disk container for performing SPARQL Update
commands.  It utilizes a DeferredFileQueue that can serialize/deserialize Bindings, Quads,
and Triples.  Also included are some unit tests.
> Items yet to be addressed:
> 1) Read the threshold and temporary file location from a config file
> 2) Examine compression of the bindings/quads/triples to see if we can improve I/O speed
> [1]$2e5c5bc0$8b151340$@com%3E

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