[teiid-issues] [JBoss JIRA] (TEIID-2707) proactive buffering on an enhanced sort merge left outer join results in an assertionerror

Wed Oct 23 11:19:01 EDT 2013

     [ https://issues.jboss.org/browse/TEIID-2707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-2707.
-----------------------------------

    Resolution: Done

Rewrote the prefetch logic to be more straight-forward and covered additional cases.  Also removed the use of the prefetch limit and instead made it based upon the number of batches pulled from the other side.  Will update the docs that the property is not currently used.

> proactive buffering on an enhanced sort merge left outer join results in an assertionerror
> ------------------------------------------------------------------------------------------
>
>                 Key: TEIID-2707
>                 URL: https://issues.jboss.org/browse/TEIID-2707
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 8.4
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 8.4.1, 8.6
>
>
> The proactive buffering logic with particular blocking patterns is not correct.  Namely the setting of the buffer to forward only prevents re-reading which results in an AssertionError.

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