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From "Paolo Castagna (JIRA)" <>
Subject [jira] [Commented] (JENA-45) Spill to disk SPARQL Update
Date Tue, 29 Mar 2011 07:41:05 GMT


Paolo Castagna commented on JENA-45:

Hi Stephen, first of all thanks for the patch.
The patch does not apply cleanly with current ARQ trunk. There are problems with UpdateEngineWorker.
I tried to fix those, but now I have two failures in TestUpdateGraphMem: testModify2 and testCopy.

> 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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