[teiid-issues] [JBoss JIRA] (TEIID-1544) Add a limit to the number of dependent queries that can be issued.

Steven Hawkins (Updated) (JIRA) jira-events at lists.jboss.org
Mon Jan 9 16:37:09 EST 2012


     [ https://issues.jboss.org/browse/TEIID-1544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins updated TEIID-1544:
----------------------------------

    Fix Version/s:     (was: 8.0)
         Priority: Minor  (was: Major)


This would likely be expressed as part of the make_dep/make_ind hints.  This is nice to have, but not a high priority.  In cost scenarios (none-hint), there is already back-off logic to help prevent runaway queries and you can always use a hint to force specific behavior.

When this is worked other parameters could be considered for the hint, such as the ability to override the translator value for max in predicates.
                
> Add a limit to the number of dependent queries that can be issued.
> ------------------------------------------------------------------
>
>                 Key: TEIID-1544
>                 URL: https://issues.jboss.org/browse/TEIID-1544
>             Project: Teiid
>          Issue Type: Sub-task
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Minor
>
> There should be a mechanism to limit the number of dependent join queries generated.  Ideally this should apply to both cost and hint based dependent joins.

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