[teiid-issues] [JBoss JIRA] Commented: (TEIID-168) Remove resultset caching

Ramesh Reddy (JIRA) jira-events at lists.jboss.org
Thu Feb 19 14:52:44 EST 2009


    [ https://jira.jboss.org/jira/browse/TEIID-168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12453347#action_12453347 ] 

Ramesh Reddy commented on TEIID-168:
------------------------------------

As the description noted this will based upon the buffer manager, not on JBoss Cache. It will be be per VM, not distributed. The idea here is not to cache the end user result sets,  but cache the intermediate results that are based on the source results based on design time hints. Thus effectively reproducing the user result set faster even in the case user has a modified query. Much like dynamic staging tables.

> Remove resultset caching
> ------------------------
>
>                 Key: TEIID-168
>                 URL: https://jira.jboss.org/jira/browse/TEIID-168
>             Project: Teiid
>          Issue Type: Feature Request
>          Components: JDBC Connector, Query Engine
>    Affects Versions: 6.x
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 6.1.0
>
>
> Resultset caching should be replaced with relation and procedure caching.  This would initially be backed by the buffermanager, based upon hints/costing, and be utilized by the planner rather than the resolver.  It would be good if we also detected the level of determinism.

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