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https://issues.apache.org/jira/browse/FLINK-9997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16635369#comment-16635369
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ASF GitHub Bot commented on FLINK-9997:
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twalthr commented on a change in pull request #6455: [FLINK-9997] [table]
Improve Expression Reduce
URL: https://github.com/apache/flink/pull/6455#discussion_r221924196
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File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/rules/FlinkRuleSets.scala
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@@ -136,6 +136,11 @@ object FlinkRuleSets {
FlinkLogicalNativeTableScan.CONVERTER
)
+ val FLINK_LOGICAL_OPT_RULES: RuleSet = RuleSets.ofList(
Review comment:
You mentioned "There's no Calc node at normalize plans, so
ReduceExpressionRule.CALC does not match any thing.". So can we remove it from
`DATASTREAM_NORM_RULES` and `DATASET_NORM_RULES`?
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> Improve Expression Reduce
> -------------------------
>
> Key: FLINK-9997
> URL: https://issues.apache.org/jira/browse/FLINK-9997
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Ruidong Li
> Assignee: Ruidong Li
> Priority: Major
> Labels: pull-request-available
>
> There's no Calc node at normalize plans, so ReduceExpressionRule.CALC does
> not match any thing.
> If adding calc-related rules to normalize phase, then project-related rules
> and filter-related rules do not match any thing at logical opt phase. If
> adding ReduceExpressionRule.CALC to logical opt phase, it will increase the
> the search time. Therefore, adding a new phase after logical opt may be an
> option.
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