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https://issues.apache.org/jira/browse/OPTIQ-362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde updated OPTIQ-362:
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Fix Version/s: 0.8
> Make non-cumulative cost (NonCumulativeCost) a pluggable form of metadata
> -------------------------------------------------------------------------
>
> Key: OPTIQ-362
> URL: https://issues.apache.org/jira/browse/OPTIQ-362
> Project: Optiq
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Fix For: 0.8
>
>
> Non-cumulative cost, the cost of a RelNode not including its children is also
> known as RelNode.computeSelfCost(RelOptPlanner) and
> BuiltInMetadata.NonCumulativeCost.
> NonCumulativeCost should be included in the default metadata provider. (See
> how BuiltInMetadata.Selectivity is included via RelMdSelectivity.SOURCE.)
> Then people could add a different cost model for the core rel nodes
> (FilterRel, JoinRel etc.)
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