[jbosscache-issues] [JBoss JIRA] Resolved: (JBCACHE-1493) REPEATABLE_READ inconsistent with write skew disabled
Manik Surtani (JIRA)
jira-events at lists.jboss.org
Wed Mar 18 05:41:22 EDT 2009
[ https://jira.jboss.org/jira/browse/JBCACHE-1493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Manik Surtani resolved JBCACHE-1493.
------------------------------------
Resolution: Done
> REPEATABLE_READ inconsistent with write skew disabled
> -----------------------------------------------------
>
> Key: JBCACHE-1493
> URL: https://jira.jboss.org/jira/browse/JBCACHE-1493
> Project: JBoss Cache
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Components: Locking
> Affects Versions: 3.0.3.GA
> Reporter: Manik Surtani
> Assignee: Manik Surtani
> Fix For: 3.1.0.GA
>
>
> Inconsistent in that with a put(), we have the last tx winning and overwriting state, which is allowed if write skew checking is disabled.
> If we have a concurrent put() and removeNode(), this is a problem since the removeNode() would only remove a node read earlier in the same transaction and not the new, updated node.
> E.g.,:
> cache.put("/a", "k", "v");
> tx.begin();
> cache.get("/a");
> tx.suspend();
> cache.put("/a", "k", "v2");
> tx.resume();
> cache.removeNode("/a");
> tx.commit();
> // node still exists!!
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