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https://issues.apache.org/jira/browse/FLINK-7834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he updated FLINK-7834:
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Summary: cost model(RelOptCost) extends network cost and memory cost (was:
cost model supports network cost and memory cost)
> cost model(RelOptCost) extends network cost and memory cost
> -----------------------------------------------------------
>
> Key: FLINK-7834
> URL: https://issues.apache.org/jira/browse/FLINK-7834
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: godfrey he
>
> {{RelOptCost}} defines an interface for optimizer cost in terms of number of
> row processed, CPU cost, and I/O cost. Flink is a distributed framework,
> network and memory are also two important cost metrics which should be
> considered for optimizer. This feature is to extend RelOptCost.
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