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From "Simon Helsen (Commented) (JIRA)" <>
Subject [jira] [Commented] (JENA-97) TDB 0.9.0 snapshot sometimes returns a SELECT binding twice
Date Fri, 07 Oct 2011 12:59:29 GMT


Simon Helsen commented on JENA-97:

I see the problem in both old-style and transactional TDB, but I do see replicated bindings.
I have to check if tdbquery removes these duplicates and if that is expected. I can confirm
that TDB 0.8.7, there were never any duplicates in the returned bindings.
> TDB 0.9.0 snapshot sometimes returns a SELECT binding twice
> -----------------------------------------------------------
>                 Key: JENA-97
>                 URL:
>             Project: Jena
>          Issue Type: Bug
>          Components: TDB
>         Environment: tx-tdb-0.9.0-20111006.082548-13-dist
>            Reporter: Simon Helsen
>            Assignee: Andy Seaborne
>         Attachments: quads.txt
> Very sometimes (rare), it seems that a result set will repeat the first SELECT binding.
> SELECT ?a ?b ...
> will bind ?a twice in the result set. It only happens quite rarely, but the same queries
behave correctly in TDB 0.8.7.

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