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Subject [GitHub] twalthr commented on a change in pull request #6981: [FLINK-10638][table] Invalid table scan resolution for temporal join queries
Date Thu, 01 Nov 2018 13:26:51 GMT
twalthr commented on a change in pull request #6981: [FLINK-10638][table] Invalid table scan
resolution for temporal join queries
URL: https://github.com/apache/flink/pull/6981#discussion_r230038751
 
 

 ##########
 File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/rules/FlinkRuleSets.scala
 ##########
 @@ -39,18 +39,14 @@ object FlinkRuleSets {
     SubQueryRemoveRule.JOIN)
 
   /**
-    * Handles proper conversion of correlate queries with temporal table functions
-    * into temporal table joins. This can create new table scans in the plan.
+    * Expand plan by replacing references to tables into a proper plan sub trees. Those rules
+    * can create new plan nodes.
     */
-  val TEMPORAL_JOIN_RULES: RuleSet = RuleSets.ofList(
-    LogicalCorrelateToTemporalTableJoinRule.INSTANCE
-  )
+  val EXPAND_PLAN_RULES: RuleSet = RuleSets.ofList(
 
 Review comment:
   We should make the rules in expand and post expand phase configurable through `org.apache.flink.table.calcite.CalciteConfigBuilder`
we also forgot this for the temporal join phase. We might have users that don't want to use
temporal joins and modify the rule sets accordingly.

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