[rdf4j-dev] Transaction isolation bug

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[rdf4j-dev] Transaction isolation bug

From: Håvard Ottestad <hmottestad@xxxxxxxxx>
Date: Thu, 25 Jul 2019 08:05:51 +0200
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Hi,

I’ve discovered a transaction isolation bug that is pretty severe.

https://github.com/eclipse/rdf4j/issues/1485

TLDR: Start two transactions in SNAPSHOT isolation. Commit data to one of them. The other can now read that data, even though the transaction started before the commit. If both transactions add/remove statements then the isolation works as expected.

Håvard

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